TY  - JOUR
AU  - Ivanović, Tijana
AU  - Popović, Daniela Ž.
AU  - Miladinović, Jelena
AU  - Miladinović, Zoran
AU  - Pastor, Ferenc
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2323
AB  - : Zero-current cell potential measurements were used
to determine the solution activity coefficient in a ternary system
{yKCl + (1 − y) KH2PO4}(aq) at temperature T = 298.15 K. The
cell of the type K−ISE|KCl(mKCl), KH2PO4(mKH2PO4
)|Ag|AgCl was
used in the total ionic strength range, Im = 0.0886−1.0046 mol
kg−1
. In order to generate a set of parameters that can be applied in
a wide range of mixed solution ionic strengths, the Pitzer,
Scatchard, and Clegg−Pitzer−Brimblecombe models were used to
fit all available experimental data, including cell potential and
isopiestic measurements from the literature. The experimental and
calculated values of thermodynamic properties for the studied
system are in excellent agreement. Potential interactions and solution structure were discussed by means of the excess free energy of
mixing via potential pairs, triplets, or quads for the investigated solution using the Scatchard model mixing parameters
PB  - ACS Publications
T2  - ACS Publications
T1  - Activity Coefficients of the System {yKCl + (1 − y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements
VL  - 68
DO  - 10.1021/acs.jced.2c00704
ER  - 

@article{
author = "Ivanović, Tijana and Popović, Daniela Ž. and Miladinović, Jelena and Miladinović, Zoran and Pastor, Ferenc",
year = "2023",
abstract = ": Zero-current cell potential measurements were used
to determine the solution activity coefficient in a ternary system
{yKCl + (1 − y) KH2PO4}(aq) at temperature T = 298.15 K. The
cell of the type K−ISE|KCl(mKCl), KH2PO4(mKH2PO4
)|Ag|AgCl was
used in the total ionic strength range, Im = 0.0886−1.0046 mol
kg−1
. In order to generate a set of parameters that can be applied in
a wide range of mixed solution ionic strengths, the Pitzer,
Scatchard, and Clegg−Pitzer−Brimblecombe models were used to
fit all available experimental data, including cell potential and
isopiestic measurements from the literature. The experimental and
calculated values of thermodynamic properties for the studied
system are in excellent agreement. Potential interactions and solution structure were discussed by means of the excess free energy of
mixing via potential pairs, triplets, or quads for the investigated solution using the Scatchard model mixing parameters",
publisher = "ACS Publications",
journal = "ACS Publications",
title = "Activity Coefficients of the System {yKCl + (1 − y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements",
volume = "68",
doi = "10.1021/acs.jced.2c00704"
}

Ivanović, T., Popović, D. Ž., Miladinović, J., Miladinović, Z.,& Pastor, F.. (2023). Activity Coefficients of the System {yKCl + (1 − y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements. in ACS Publications
ACS Publications., 68.
https://doi.org/10.1021/acs.jced.2c00704

Ivanović T, Popović DŽ, Miladinović J, Miladinović Z, Pastor F. Activity Coefficients of the System {yKCl + (1 − y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements. in ACS Publications. 2023;68.
doi:10.1021/acs.jced.2c00704 .

Ivanović, Tijana, Popović, Daniela Ž., Miladinović, Jelena, Miladinović, Zoran, Pastor, Ferenc, "Activity Coefficients of the System {yKCl + (1 − y)KH2PO4}(aq) at T = 298.15 K Determined by Cell Potential Measurements" in ACS Publications, 68 (2023),
https://doi.org/10.1021/acs.jced.2c00704 . .

TY  - JOUR
AU  - Popović, Daniela Ž.
AU  - Ivanović, Tijana
AU  - Miladinović, Jelena
AU  - Miladinović, Zoran
AU  - Pastor, Ferenc
AU  - Zlatić, Aleksandra
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3091
AB  - The mean ionic activity coefficients of NaCl in a ternary system {yNaCl + (1 – y)Na2HPO4}(aq)
were determined from measurements of the electromotive force (EMF) where the NaCl ionic strength
fraction was y = (0.3012; 0.4015; 0.5011; 0.5988; 0.7706; 0.8997) in the range of total ionic strength of the
solution Im = 0.0701–1.0161 mol kg–1 at temperature T = 298.15 K. A cell of the Na–ISE| ,Na2HPO4|AgCl|Ag, type was employed for the EMF measurements. The experimental results
from this work and the model of Pitzer’s were used to determine the mixing parameters. Good agreement
was found between the experimental and calculated values of the mean ionic activity coefficients of NaCl
with a standard deviation of fit 1.5 × 10–3. The values of the osmotic coefficients of the system {yNaCl +
(1 – y)Na2HPO4}(aq) were estimated on the basis of the determined parameters and compared with liter ature data. The differences in the osmotic coefficients between the estimated and experimental values were
negligible
PB  - Pleiades Publishing
T2  - Russian Journal of Physical Chemistry A
T1  - Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq)  at T = 298.15 K Determined by Electromotive Force Measurements
EP  - 2702
SP  - 2693
DO  - 10.1134/S0036024423120063
ER  - 

@article{
author = "Popović, Daniela Ž. and Ivanović, Tijana and Miladinović, Jelena and Miladinović, Zoran and Pastor, Ferenc and Zlatić, Aleksandra",
year = "2023",
abstract = "The mean ionic activity coefficients of NaCl in a ternary system {yNaCl + (1 – y)Na2HPO4}(aq)
were determined from measurements of the electromotive force (EMF) where the NaCl ionic strength
fraction was y = (0.3012; 0.4015; 0.5011; 0.5988; 0.7706; 0.8997) in the range of total ionic strength of the
solution Im = 0.0701–1.0161 mol kg–1 at temperature T = 298.15 K. A cell of the Na–ISE| ,Na2HPO4|AgCl|Ag, type was employed for the EMF measurements. The experimental results
from this work and the model of Pitzer’s were used to determine the mixing parameters. Good agreement
was found between the experimental and calculated values of the mean ionic activity coefficients of NaCl
with a standard deviation of fit 1.5 × 10–3. The values of the osmotic coefficients of the system {yNaCl +
(1 – y)Na2HPO4}(aq) were estimated on the basis of the determined parameters and compared with liter ature data. The differences in the osmotic coefficients between the estimated and experimental values were
negligible",
publisher = "Pleiades Publishing",
journal = "Russian Journal of Physical Chemistry A",
title = "Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq)  at T = 298.15 K Determined by Electromotive Force Measurements",
pages = "2702-2693",
doi = "10.1134/S0036024423120063"
}

Popović, D. Ž., Ivanović, T., Miladinović, J., Miladinović, Z., Pastor, F.,& Zlatić, A.. (2023). Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq)  at T = 298.15 K Determined by Electromotive Force Measurements. in Russian Journal of Physical Chemistry A
Pleiades Publishing., 2693-2702.
https://doi.org/10.1134/S0036024423120063

Popović DŽ, Ivanović T, Miladinović J, Miladinović Z, Pastor F, Zlatić A. Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq)  at T = 298.15 K Determined by Electromotive Force Measurements. in Russian Journal of Physical Chemistry A. 2023;:2693-2702.
doi:10.1134/S0036024423120063 .

Popović, Daniela Ž., Ivanović, Tijana, Miladinović, Jelena, Miladinović, Zoran, Pastor, Ferenc, Zlatić, Aleksandra, "Activity Coefficients of the System {yNaCl + (1 – y)Na2HPO4}(aq)  at T = 298.15 K Determined by Electromotive Force Measurements" in Russian Journal of Physical Chemistry A (2023):2693-2702,
https://doi.org/10.1134/S0036024423120063 . .

TY  - CONF
AU  - Popović, Daniela Ž.
AU  - Ivanović, Tijana G.
AU  - Miladinović, Jelena
AU  - Miladinović, Zoran
AU  - Pastor, Ferenc
AU  - Zlatić, Aleksandra
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3099
AB  - The mean ionic activity coefficients of NaCl in a ternary system {yNaCl+(1-y) Na_2 HPO_4 }(aq)were determined using electromotive force measurements (EMF) at T = 298.15 K. For EMF measurements, a cell of the type Na–ISE〖NaCl(m〗_NaCl), Na_2 HPO_4 〖(m〗_(KH_2 PO_4 ))AgAgCl  was employed with NaCl ionic strength fractions y = (0.3012; 0.5011; 0.7706) in the range of total ionic strength of the solution I = (0.0701 – 0.9315) mol·kg-1. The Extended Pitzer model was used to analyze experimental data for the mixed electrolyte solution, and good agreement between experimental and calculated values of thermodynamic properties was found with a standard deviation of the fit of 10-3 order.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)
T1  - THERMODYNAMIC PROPERTIES OF THE SYSTEM  {yNaCl+(1–y)Na2HPO4}(aq) AT  T = 298.15 K BY ELECTROMOTIVE FORCE MEASUREMENTS
EP  - 248
SP  - 245
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_3099
ER  - 

@conference{
author = "Popović, Daniela Ž. and Ivanović, Tijana G. and Miladinović, Jelena and Miladinović, Zoran and Pastor, Ferenc and Zlatić, Aleksandra",
year = "2022",
abstract = "The mean ionic activity coefficients of NaCl in a ternary system {yNaCl+(1-y) Na_2 HPO_4 }(aq)were determined using electromotive force measurements (EMF) at T = 298.15 K. For EMF measurements, a cell of the type Na–ISE〖NaCl(m〗_NaCl), Na_2 HPO_4 〖(m〗_(KH_2 PO_4 ))AgAgCl  was employed with NaCl ionic strength fractions y = (0.3012; 0.5011; 0.7706) in the range of total ionic strength of the solution I = (0.0701 – 0.9315) mol·kg-1. The Extended Pitzer model was used to analyze experimental data for the mixed electrolyte solution, and good agreement between experimental and calculated values of thermodynamic properties was found with a standard deviation of the fit of 10-3 order.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)",
title = "THERMODYNAMIC PROPERTIES OF THE SYSTEM  {yNaCl+(1–y)Na2HPO4}(aq) AT  T = 298.15 K BY ELECTROMOTIVE FORCE MEASUREMENTS",
pages = "248-245",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_3099"
}

Popović, D. Ž., Ivanović, T. G., Miladinović, J., Miladinović, Z., Pastor, F.,& Zlatić, A.. (2022). THERMODYNAMIC PROPERTIES OF THE SYSTEM  {yNaCl+(1–y)Na2HPO4}(aq) AT  T = 298.15 K BY ELECTROMOTIVE FORCE MEASUREMENTS. in Physical chemistry 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)
Society of Physical Chemists of Serbia., 245-248.
https://hdl.handle.net/21.15107/rcub_rimsi_3099

Popović DŽ, Ivanović TG, Miladinović J, Miladinović Z, Pastor F, Zlatić A. THERMODYNAMIC PROPERTIES OF THE SYSTEM  {yNaCl+(1–y)Na2HPO4}(aq) AT  T = 298.15 K BY ELECTROMOTIVE FORCE MEASUREMENTS. in Physical chemistry 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings). 2022;:245-248.
https://hdl.handle.net/21.15107/rcub_rimsi_3099 .

Popović, Daniela Ž., Ivanović, Tijana G., Miladinović, Jelena, Miladinović, Zoran, Pastor, Ferenc, Zlatić, Aleksandra, "THERMODYNAMIC PROPERTIES OF THE SYSTEM  {yNaCl+(1–y)Na2HPO4}(aq) AT  T = 298.15 K BY ELECTROMOTIVE FORCE MEASUREMENTS" in Physical chemistry 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings) (2022):245-248,
https://hdl.handle.net/21.15107/rcub_rimsi_3099 .

TY  - JOUR
AU  - Ivanović, Tijana
AU  - Popović, D.Ž.
AU  - Miladinović, Jelena
AU  - Miladinović, Zoran P.
AU  - Pastor, Ferenc
AU  - Nikolić, A.
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1518
AB  - The mean activity coefficients of KCl in the ternary system {y KCl + (1 – y) K2HPO4}(aq) were experimentally determined at T = (298.15 ± 0.01) K by the electromotive force measurement (EMF method) using the cell of the type, K–ISE∣KCl(mKCl), K2HPO4(mK2HPO4)∣Ag∣AgCl (ISE = ion-selective electrode), in the range of total ionic strength of the solution Im = (0.10 to 1.00) mol·kg−1 at different ionic strength fractions of KCl being y = (0.1011; 0.1997; 0.3016; 0.4027; 0.5006; 0.6018; 0.7018; 0.8051; 0.8988; 1). In addition, the osmotic coefficients of the system have been measured at the same temperature by the isopiestic vapor pressure method over the range of ionic strengths from (0.96698 to 2.21602) mol⋅kg−1 using KCl(aq) as the reference solution, at ionic strength fractions of KCl being y = (0.2063; 0.3849; 0.6099; 0.8011; 1). Values of the mean ionic activity coefficients of KCl and osmotic coefficients in the system {yKCl+(1–y)K2HPO4}(aq) were treated by an extended form of Pitzer's ion-interaction model, Scatchard's neutral-electrolyte model and Clegg–Pitzer–Brimblecombe's equations based on the mole-fraction-composition scale. All three models gave similar quality representations of both sets of experimental results. There are two sets of previously published isopiestic data that were taken into consideration during treatment. The model parameters were fitted and optimized to all available thermodynamic data from EMF and isopiestic measurements to obtain an accurate and self-consistent description of properties and to form a set of parameters that can be used in a wide range of ionic strength of the system. The standard deviation of the fit for the ionic strength range from Im = (0.0897 to 10.4350) mol·kg−1 with two optimized mixing parameters of Pitzer's model without higher–order electrostatic terms was for the mean ionic activity coefficients of KCl and osmotic coefficients, s.d. (γ±) = 3.5⋅10–3 and s.d. (ϕ) = 4.7⋅10–3 respectively, with two optimized mixing parameters of the Scatchard model standard deviations were s.d. (γ±) = 4.9⋅10–3 and s.d. (ϕ) = 5.0⋅10–3 and with Clegg–Pitzer–Brimblecombe's model higher–order electrostatic terms not included, standard deviations were s.d. (γ±) = 4.2⋅10–3 and s.d. (ϕ) = 4.8⋅10–3.
PB  - Elsevier B.V.
T2  - Journal of Molecular Liquids
T1  - Isopiestic determination of osmotic coefficients in the ionic strength range Im = (0.9670–2.2160) mol⋅kg−1 and activity coefficients determined by electromotive force measurements in the range Im = (0.0897–1.0054) mol⋅kg−1 of the {yKCl + (1 – y) K2HPO4}(a
VL  - 353
DO  - 10.1016/j.molliq.2022.118767
ER  - 

@article{
author = "Ivanović, Tijana and Popović, D.Ž. and Miladinović, Jelena and Miladinović, Zoran P. and Pastor, Ferenc and Nikolić, A.",
year = "2022",
abstract = "The mean activity coefficients of KCl in the ternary system {y KCl + (1 – y) K2HPO4}(aq) were experimentally determined at T = (298.15 ± 0.01) K by the electromotive force measurement (EMF method) using the cell of the type, K–ISE∣KCl(mKCl), K2HPO4(mK2HPO4)∣Ag∣AgCl (ISE = ion-selective electrode), in the range of total ionic strength of the solution Im = (0.10 to 1.00) mol·kg−1 at different ionic strength fractions of KCl being y = (0.1011; 0.1997; 0.3016; 0.4027; 0.5006; 0.6018; 0.7018; 0.8051; 0.8988; 1). In addition, the osmotic coefficients of the system have been measured at the same temperature by the isopiestic vapor pressure method over the range of ionic strengths from (0.96698 to 2.21602) mol⋅kg−1 using KCl(aq) as the reference solution, at ionic strength fractions of KCl being y = (0.2063; 0.3849; 0.6099; 0.8011; 1). Values of the mean ionic activity coefficients of KCl and osmotic coefficients in the system {yKCl+(1–y)K2HPO4}(aq) were treated by an extended form of Pitzer's ion-interaction model, Scatchard's neutral-electrolyte model and Clegg–Pitzer–Brimblecombe's equations based on the mole-fraction-composition scale. All three models gave similar quality representations of both sets of experimental results. There are two sets of previously published isopiestic data that were taken into consideration during treatment. The model parameters were fitted and optimized to all available thermodynamic data from EMF and isopiestic measurements to obtain an accurate and self-consistent description of properties and to form a set of parameters that can be used in a wide range of ionic strength of the system. The standard deviation of the fit for the ionic strength range from Im = (0.0897 to 10.4350) mol·kg−1 with two optimized mixing parameters of Pitzer's model without higher–order electrostatic terms was for the mean ionic activity coefficients of KCl and osmotic coefficients, s.d. (γ±) = 3.5⋅10–3 and s.d. (ϕ) = 4.7⋅10–3 respectively, with two optimized mixing parameters of the Scatchard model standard deviations were s.d. (γ±) = 4.9⋅10–3 and s.d. (ϕ) = 5.0⋅10–3 and with Clegg–Pitzer–Brimblecombe's model higher–order electrostatic terms not included, standard deviations were s.d. (γ±) = 4.2⋅10–3 and s.d. (ϕ) = 4.8⋅10–3.",
publisher = "Elsevier B.V.",
journal = "Journal of Molecular Liquids",
title = "Isopiestic determination of osmotic coefficients in the ionic strength range Im = (0.9670–2.2160) mol⋅kg−1 and activity coefficients determined by electromotive force measurements in the range Im = (0.0897–1.0054) mol⋅kg−1 of the {yKCl + (1 – y) K2HPO4}(a",
volume = "353",
doi = "10.1016/j.molliq.2022.118767"
}

Ivanović, T., Popović, D.Ž., Miladinović, J., Miladinović, Z. P., Pastor, F.,& Nikolić, A.. (2022). Isopiestic determination of osmotic coefficients in the ionic strength range Im = (0.9670–2.2160) mol⋅kg−1 and activity coefficients determined by electromotive force measurements in the range Im = (0.0897–1.0054) mol⋅kg−1 of the {yKCl + (1 – y) K2HPO4}(a. in Journal of Molecular Liquids
Elsevier B.V.., 353.
https://doi.org/10.1016/j.molliq.2022.118767

Ivanović T, Popović D, Miladinović J, Miladinović ZP, Pastor F, Nikolić A. Isopiestic determination of osmotic coefficients in the ionic strength range Im = (0.9670–2.2160) mol⋅kg−1 and activity coefficients determined by electromotive force measurements in the range Im = (0.0897–1.0054) mol⋅kg−1 of the {yKCl + (1 – y) K2HPO4}(a. in Journal of Molecular Liquids. 2022;353.
doi:10.1016/j.molliq.2022.118767 .

Ivanović, Tijana, Popović, D.Ž., Miladinović, Jelena, Miladinović, Zoran P., Pastor, Ferenc, Nikolić, A., "Isopiestic determination of osmotic coefficients in the ionic strength range Im = (0.9670–2.2160) mol⋅kg−1 and activity coefficients determined by electromotive force measurements in the range Im = (0.0897–1.0054) mol⋅kg−1 of the {yKCl + (1 – y) K2HPO4}(a" in Journal of Molecular Liquids, 353 (2022),
https://doi.org/10.1016/j.molliq.2022.118767 . .

TY  - CONF
AU  - Popović, Daniela Ž.
AU  - Ivanović, Tijana G.
AU  - Miladinović, Jelena
AU  - Miladinović, Zoran
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3098
AB  - The thermodynamic properties of the mixed electrolyte solutions are conveniently described in terms of excess quantities. The excess Gibbs energy of mixing, presents the difference between the excess free energy of a mixed electrolyte solution and free energies of the individual binary electrolyte solutions at the same temperature, pressure and total ionic strength. In this paper the excess Gibbs energy of mixing is calculated for series of mixed electrolyte solutions and possible pairs, triplets, quads or even higher order multiplets were discussed in respect to Scatchard’s mixing parameter values.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2022, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)
T1  - CONTRIBUTION OF DIFFERENT INTERACTIONS TO THE EXCESS GIBBS ENERGY OF MIXING IN AQUEOUS ELECTROLYTE SOLUTIONS
EP  - 54
SP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_3098
ER  - 

@conference{
author = "Popović, Daniela Ž. and Ivanović, Tijana G. and Miladinović, Jelena and Miladinović, Zoran",
year = "2021",
abstract = "The thermodynamic properties of the mixed electrolyte solutions are conveniently described in terms of excess quantities. The excess Gibbs energy of mixing, presents the difference between the excess free energy of a mixed electrolyte solution and free energies of the individual binary electrolyte solutions at the same temperature, pressure and total ionic strength. In this paper the excess Gibbs energy of mixing is calculated for series of mixed electrolyte solutions and possible pairs, triplets, quads or even higher order multiplets were discussed in respect to Scatchard’s mixing parameter values.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2022, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)",
title = "CONTRIBUTION OF DIFFERENT INTERACTIONS TO THE EXCESS GIBBS ENERGY OF MIXING IN AQUEOUS ELECTROLYTE SOLUTIONS",
pages = "54-51",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_3098"
}

Popović, D. Ž., Ivanović, T. G., Miladinović, J.,& Miladinović, Z.. (2021). CONTRIBUTION OF DIFFERENT INTERACTIONS TO THE EXCESS GIBBS ENERGY OF MIXING IN AQUEOUS ELECTROLYTE SOLUTIONS. in Physical chemistry 2022, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)
Society of Physical Chemists of Serbia., 51-54.
https://hdl.handle.net/21.15107/rcub_rimsi_3098

Popović DŽ, Ivanović TG, Miladinović J, Miladinović Z. CONTRIBUTION OF DIFFERENT INTERACTIONS TO THE EXCESS GIBBS ENERGY OF MIXING IN AQUEOUS ELECTROLYTE SOLUTIONS. in Physical chemistry 2022, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings). 2021;:51-54.
https://hdl.handle.net/21.15107/rcub_rimsi_3098 .

Popović, Daniela Ž., Ivanović, Tijana G., Miladinović, Jelena, Miladinović, Zoran, "CONTRIBUTION OF DIFFERENT INTERACTIONS TO THE EXCESS GIBBS ENERGY OF MIXING IN AQUEOUS ELECTROLYTE SOLUTIONS" in Physical chemistry 2022, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings) (2021):51-54,
https://hdl.handle.net/21.15107/rcub_rimsi_3098 .

TY  - JOUR
AU  - Ivanović, Tijana
AU  - Popović, Daniela Z.
AU  - Miladinović, Jelena
AU  - Rard, Joseph A.
AU  - Miladinović, Zoran P.
AU  - Pastor, Ferenc
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1341
AB  - Isopiestic measurements have been made at 55 compositions of the {yK(2)HPO(4) + (1 - y)KH2PO4}(aq) system at T = (298.15 +/- 0.01) K, 11 for each of the limiting binary solutions and 33 for mixture compositions at K2HPO4 stoichiometric ionic strength fractions y = (0.23330, 0.47671, and 0.73177), using KCl(aq) as the reference standard. Model parameters for the binary subsystems were evaluated at this temperature for an extended form of Pitzer's ion-interaction model and also for the Clegg, Pitzer and Brimblecombe model based on the mole-fraction-composition scale, using the present isopiestic results along with critically-assessed osmotic coefficients for both of these aqueous electrolytes as extracted from the published literature. The thermodynamic models for KH2PO4(aq) extend to slightly above the saturated solution molality at T = (298.15 +/- 0.01) K, whereas those for K2HPO4(aq) extend to m = 9.7429 mol.kg(-1), which is the molality of the saturated solution, also at T = (298.15 +/- 0.01) K. These results yield the CODATA-compatible standard Gibbs energy of formation Delta(f)G(m)(o)(K2HPO4 center dot 3H(2)O; cr; 298.15 K) = -(2367.70 +/- 1.60) kJ.mol(-1). The 33 osmotic coefficients for the ternary mixtures were likewise represented with these models, using both the usual Pitzer mixing terms and also Scatchard's neutral-electrolyte model mixing terms for the extended ion-interaction model. Two mixing parameters are needed for each of the three models for {yK(2)HPO(4) + (1 - y)KH2PO4}(aq), and both of these ion-interaction models give similar high-quality representations of the experimental results. However, the Clegg, Pitzer and Brimblecombe model had more difficulty in representing the osmotic coefficients of K2HPO4(aq), especially below 3 mol.kg(-1), and consequently the corresponding mixture model with two mixing parameters is slightly less accurate for representing the osmotic coefficients. The maximum difference in calculated values of the mean molality-based activity coefficients for the two recommended extended Pitzer models with the different types of mixing terms are 0.0061 for the trace activity coefficient of K2HPO4(aq) in KH2PO4(aq) but with much better agreement at most mixture compositions.
PB  - Academic Press Ltd- Elsevier Science Ltd, London
T2  - Journal of Chemical Thermodynamics
T1  - Isopiestic determination of the osmotic and activity coefficients of {yK(2)HPO(4) + (1-y)KH2PO4}(aq) at T=298.15 K
VL  - 142
DO  - 10.1016/j.jct.2019.105945
ER  - 

@article{
author = "Ivanović, Tijana and Popović, Daniela Z. and Miladinović, Jelena and Rard, Joseph A. and Miladinović, Zoran P. and Pastor, Ferenc",
year = "2020",
abstract = "Isopiestic measurements have been made at 55 compositions of the {yK(2)HPO(4) + (1 - y)KH2PO4}(aq) system at T = (298.15 +/- 0.01) K, 11 for each of the limiting binary solutions and 33 for mixture compositions at K2HPO4 stoichiometric ionic strength fractions y = (0.23330, 0.47671, and 0.73177), using KCl(aq) as the reference standard. Model parameters for the binary subsystems were evaluated at this temperature for an extended form of Pitzer's ion-interaction model and also for the Clegg, Pitzer and Brimblecombe model based on the mole-fraction-composition scale, using the present isopiestic results along with critically-assessed osmotic coefficients for both of these aqueous electrolytes as extracted from the published literature. The thermodynamic models for KH2PO4(aq) extend to slightly above the saturated solution molality at T = (298.15 +/- 0.01) K, whereas those for K2HPO4(aq) extend to m = 9.7429 mol.kg(-1), which is the molality of the saturated solution, also at T = (298.15 +/- 0.01) K. These results yield the CODATA-compatible standard Gibbs energy of formation Delta(f)G(m)(o)(K2HPO4 center dot 3H(2)O; cr; 298.15 K) = -(2367.70 +/- 1.60) kJ.mol(-1). The 33 osmotic coefficients for the ternary mixtures were likewise represented with these models, using both the usual Pitzer mixing terms and also Scatchard's neutral-electrolyte model mixing terms for the extended ion-interaction model. Two mixing parameters are needed for each of the three models for {yK(2)HPO(4) + (1 - y)KH2PO4}(aq), and both of these ion-interaction models give similar high-quality representations of the experimental results. However, the Clegg, Pitzer and Brimblecombe model had more difficulty in representing the osmotic coefficients of K2HPO4(aq), especially below 3 mol.kg(-1), and consequently the corresponding mixture model with two mixing parameters is slightly less accurate for representing the osmotic coefficients. The maximum difference in calculated values of the mean molality-based activity coefficients for the two recommended extended Pitzer models with the different types of mixing terms are 0.0061 for the trace activity coefficient of K2HPO4(aq) in KH2PO4(aq) but with much better agreement at most mixture compositions.",
publisher = "Academic Press Ltd- Elsevier Science Ltd, London",
journal = "Journal of Chemical Thermodynamics",
title = "Isopiestic determination of the osmotic and activity coefficients of {yK(2)HPO(4) + (1-y)KH2PO4}(aq) at T=298.15 K",
volume = "142",
doi = "10.1016/j.jct.2019.105945"
}

Ivanović, T., Popović, D. Z., Miladinović, J., Rard, J. A., Miladinović, Z. P.,& Pastor, F.. (2020). Isopiestic determination of the osmotic and activity coefficients of {yK(2)HPO(4) + (1-y)KH2PO4}(aq) at T=298.15 K. in Journal of Chemical Thermodynamics
Academic Press Ltd- Elsevier Science Ltd, London., 142.
https://doi.org/10.1016/j.jct.2019.105945

Ivanović T, Popović DZ, Miladinović J, Rard JA, Miladinović ZP, Pastor F. Isopiestic determination of the osmotic and activity coefficients of {yK(2)HPO(4) + (1-y)KH2PO4}(aq) at T=298.15 K. in Journal of Chemical Thermodynamics. 2020;142.
doi:10.1016/j.jct.2019.105945 .

Ivanović, Tijana, Popović, Daniela Z., Miladinović, Jelena, Rard, Joseph A., Miladinović, Zoran P., Pastor, Ferenc, "Isopiestic determination of the osmotic and activity coefficients of {yK(2)HPO(4) + (1-y)KH2PO4}(aq) at T=298.15 K" in Journal of Chemical Thermodynamics, 142 (2020),
https://doi.org/10.1016/j.jct.2019.105945 . .

TY  - JOUR
AU  - Ivanović, Tijana
AU  - Popović, Daniela Z.
AU  - Miladinović, Jelena
AU  - Rard, Joseph A.
AU  - Miladinović, Zoran P.
AU  - Pastor, Ferenc
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1334
AB  - Isopiestic measurements have been made for aqueous solutions of the common sodium cation mixtures of NaH2PO4 and Na2HPO4 at T = 298.15 +/- 0.01 K, at NaH2PO4 ionic strength fractions y = (0, 0.24851, 0.49862, 0.74544, and 1), where the ionic strength fractions were calculated by assuming complete electrolytic dissociation of NaH2PO4 as 1:1 and Na2HPO4 as 2:1 electrolytes; CaCl2(aq) was used as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T = 298.15 K for both NaH2PO4(aq) and Na2HPO4(aq) using the isopiestic results from this study (17 values each) together with numerous critically assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for NaH2PO4(aq) extend to m = 7.5 mol.kg(-1), whereas those for Na2HPO4(aq) extend to m = 2.6050 mol.kg(-1), which is well above the solubility limit for the thermodynamically stable phase Na2HPO4 center dot 12H(2)O(cr). The 51 osmotic coefficients for the ternary mixtures were treated with these two models together with Scatchard's neutral-electrolyte model; one previous set of osmotic coefficient values for {yNaH(2)PO(4) + (1 - y)Na2HPO4}(aq) mixtures was found in the literature [Scharge, T.; et al. J. Chem. Thermodyn. 2015, 80, 172-183], and hence an analysis and comparison were made of our results with theirs.
PB  - Amer Chemical Soc, Washington
T2  - Journal of Chemical and Engineering Data
T1  - Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K
EP  - 5153
IS  - 11
SP  - 5137
VL  - 65
DO  - 10.1021/acs.jced.0c00281
ER  - 

@article{
author = "Ivanović, Tijana and Popović, Daniela Z. and Miladinović, Jelena and Rard, Joseph A. and Miladinović, Zoran P. and Pastor, Ferenc",
year = "2020",
abstract = "Isopiestic measurements have been made for aqueous solutions of the common sodium cation mixtures of NaH2PO4 and Na2HPO4 at T = 298.15 +/- 0.01 K, at NaH2PO4 ionic strength fractions y = (0, 0.24851, 0.49862, 0.74544, and 1), where the ionic strength fractions were calculated by assuming complete electrolytic dissociation of NaH2PO4 as 1:1 and Na2HPO4 as 2:1 electrolytes; CaCl2(aq) was used as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T = 298.15 K for both NaH2PO4(aq) and Na2HPO4(aq) using the isopiestic results from this study (17 values each) together with numerous critically assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for NaH2PO4(aq) extend to m = 7.5 mol.kg(-1), whereas those for Na2HPO4(aq) extend to m = 2.6050 mol.kg(-1), which is well above the solubility limit for the thermodynamically stable phase Na2HPO4 center dot 12H(2)O(cr). The 51 osmotic coefficients for the ternary mixtures were treated with these two models together with Scatchard's neutral-electrolyte model; one previous set of osmotic coefficient values for {yNaH(2)PO(4) + (1 - y)Na2HPO4}(aq) mixtures was found in the literature [Scharge, T.; et al. J. Chem. Thermodyn. 2015, 80, 172-183], and hence an analysis and comparison were made of our results with theirs.",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Chemical and Engineering Data",
title = "Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K",
pages = "5153-5137",
number = "11",
volume = "65",
doi = "10.1021/acs.jced.0c00281"
}

Ivanović, T., Popović, D. Z., Miladinović, J., Rard, J. A., Miladinović, Z. P.,& Pastor, F.. (2020). Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K. in Journal of Chemical and Engineering Data
Amer Chemical Soc, Washington., 65(11), 5137-5153.
https://doi.org/10.1021/acs.jced.0c00281

Ivanović T, Popović DZ, Miladinović J, Rard JA, Miladinović ZP, Pastor F. Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K. in Journal of Chemical and Engineering Data. 2020;65(11):5137-5153.
doi:10.1021/acs.jced.0c00281 .

Ivanović, Tijana, Popović, Daniela Z., Miladinović, Jelena, Rard, Joseph A., Miladinović, Zoran P., Pastor, Ferenc, "Isopiestic Determination of Osmotic and Activity Coefficients of the {yNaH(2)PO(4) + (1-y)Na2HPO4}(aq) System at T=298.15 K" in Journal of Chemical and Engineering Data, 65, no. 11 (2020):5137-5153,
https://doi.org/10.1021/acs.jced.0c00281 . .

TY  - JOUR
AU  - Ivanović, Tijana
AU  - Popović, Daniela Z.
AU  - Miladinović, Jelena
AU  - Rard, Joseph A.
AU  - Miladinović, Zoran P.
AU  - Belosević, Svetlana
AU  - Trivunac, Katarina
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1259
AB  - Isopiestic measurements have been made for aqueous mixtures of NaH2PO4 and KH2PO4 at T=(298.15 +/- 0.01) K, at NaH2PO4 ionic strength fractions y=(0, 0.19108, 0.38306, 0.58192, and 1), assuming that both electrolytes dissociate as 1:1 electrolytes, using KCl(aq) as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T=298.15K for NaH2PO4(aq) using the present isopiestic results (13 values), as were those for KH2PO4(aq) using the present isopiestic results (12 values), together with numerous critically-assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for KH2PO4(aq) extend to m=2.187molkg(-1), which is slightly above saturation, while those for NaH2PO4(aq) extend to m=7.5molkg(-1), which is below saturation. The 39 osmotic coefficients for the ternary mixtures from the present study along with 42 values from a published study were likewise represented with these models, with both the usual Pitzer mixing terms and also Scatchard's neutral-electrolyte model mixing terms being used for the extended ion-interaction model. Two mixing parameters were needed for each of the models, and all three models gave similar quality representations of the experimental results. Maximum differences in calculated values of mean molality-based activity coefficients for these three models are (+/-)(NaH2PO4)0.0080 and (+/-)(KH2PO4)0.0043. The experimental results were also found to nearly conform to Zdanovskii's rule.
PB  - Springer/Plenum Publishers, New York
T2  - Journal of Solution Chemistry
T1  - Isopiestic Determination of the Osmotic and Activity Coefficients of the {yNaH(2)PO(4)+(1-y)KH2PO4}(aq) System at T=298.15K
EP  - 328
IS  - 3
SP  - 296
VL  - 48
DO  - 10.1007/s10953-018-0839-4
ER  - 

@article{
author = "Ivanović, Tijana and Popović, Daniela Z. and Miladinović, Jelena and Rard, Joseph A. and Miladinović, Zoran P. and Belosević, Svetlana and Trivunac, Katarina",
year = "2019",
abstract = "Isopiestic measurements have been made for aqueous mixtures of NaH2PO4 and KH2PO4 at T=(298.15 +/- 0.01) K, at NaH2PO4 ionic strength fractions y=(0, 0.19108, 0.38306, 0.58192, and 1), assuming that both electrolytes dissociate as 1:1 electrolytes, using KCl(aq) as the reference standard solution. Model parameters for an extended form of Pitzer's ion-interaction model and also for the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale were evaluated at T=298.15K for NaH2PO4(aq) using the present isopiestic results (13 values), as were those for KH2PO4(aq) using the present isopiestic results (12 values), together with numerous critically-assessed osmotic coefficients for both electrolytes taken from the published literature. The thermodynamic models for KH2PO4(aq) extend to m=2.187molkg(-1), which is slightly above saturation, while those for NaH2PO4(aq) extend to m=7.5molkg(-1), which is below saturation. The 39 osmotic coefficients for the ternary mixtures from the present study along with 42 values from a published study were likewise represented with these models, with both the usual Pitzer mixing terms and also Scatchard's neutral-electrolyte model mixing terms being used for the extended ion-interaction model. Two mixing parameters were needed for each of the models, and all three models gave similar quality representations of the experimental results. Maximum differences in calculated values of mean molality-based activity coefficients for these three models are (+/-)(NaH2PO4)0.0080 and (+/-)(KH2PO4)0.0043. The experimental results were also found to nearly conform to Zdanovskii's rule.",
publisher = "Springer/Plenum Publishers, New York",
journal = "Journal of Solution Chemistry",
title = "Isopiestic Determination of the Osmotic and Activity Coefficients of the {yNaH(2)PO(4)+(1-y)KH2PO4}(aq) System at T=298.15K",
pages = "328-296",
number = "3",
volume = "48",
doi = "10.1007/s10953-018-0839-4"
}

Ivanović, T., Popović, D. Z., Miladinović, J., Rard, J. A., Miladinović, Z. P., Belosević, S.,& Trivunac, K.. (2019). Isopiestic Determination of the Osmotic and Activity Coefficients of the {yNaH(2)PO(4)+(1-y)KH2PO4}(aq) System at T=298.15K. in Journal of Solution Chemistry
Springer/Plenum Publishers, New York., 48(3), 296-328.
https://doi.org/10.1007/s10953-018-0839-4

Ivanović T, Popović DZ, Miladinović J, Rard JA, Miladinović ZP, Belosević S, Trivunac K. Isopiestic Determination of the Osmotic and Activity Coefficients of the {yNaH(2)PO(4)+(1-y)KH2PO4}(aq) System at T=298.15K. in Journal of Solution Chemistry. 2019;48(3):296-328.
doi:10.1007/s10953-018-0839-4 .

Ivanović, Tijana, Popović, Daniela Z., Miladinović, Jelena, Rard, Joseph A., Miladinović, Zoran P., Belosević, Svetlana, Trivunac, Katarina, "Isopiestic Determination of the Osmotic and Activity Coefficients of the {yNaH(2)PO(4)+(1-y)KH2PO4}(aq) System at T=298.15K" in Journal of Solution Chemistry, 48, no. 3 (2019):296-328,
https://doi.org/10.1007/s10953-018-0839-4 . .

TY  - JOUR
AU  - Nikolić, V.
AU  - Komljenović, Miroslav M
AU  - Džunuzović, Nataša
AU  - Miladinović, Zoran P.
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1184
AB  - Preventing or reducing negative effects on the environment from the waste landfilling is the main goal defined by the European Landfill Directive. Generally geopolymers can be considered as sustainable binders for immobilization of hazardous wastes containing different toxic elements. In this paper the influence of addition of high amount of lead on structure, strength, and leaching behavior (the effectiveness of Pb immobilization) of fly ash-based geopolymers depending on the geopolymer curing conditions was investigated. Lead was added during the synthesis of geopolymers in the form of highly soluble salt - lead-nitrate. Structural changes of geopolymers as a result of lead addition/immobilization were assessed by means of XRD, SEM/EDS, and Si-29 MAS NMR analysis. Investigated curing conditions significantly influenced structure, strength and leaching behavior of geopolymers. High addition of lead caused a sizeable decrease in compressive strength of geopolymers and promoted formation of aluminum-deficient aluminosilicate gel (de polymerization of aluminosilicate gel), regardless of the curing conditions investigated. According to the EUWAC limitations, 4% of lead was successfully immobilized by fly ash-based geopolymers cured for 28 days in a humid chamber at room temperature.
PB  - Elsevier B.V.
T2  - Journal of Hazardous Materials
T1  - The influence of Pb addition on the properties of fly ash-based geopolymers
EP  - 107
SP  - 98
VL  - 350
DO  - 10.1016/j.jhazmat.2018.02.023
ER  - 

@article{
author = "Nikolić, V. and Komljenović, Miroslav M and Džunuzović, Nataša and Miladinović, Zoran P.",
year = "2018",
abstract = "Preventing or reducing negative effects on the environment from the waste landfilling is the main goal defined by the European Landfill Directive. Generally geopolymers can be considered as sustainable binders for immobilization of hazardous wastes containing different toxic elements. In this paper the influence of addition of high amount of lead on structure, strength, and leaching behavior (the effectiveness of Pb immobilization) of fly ash-based geopolymers depending on the geopolymer curing conditions was investigated. Lead was added during the synthesis of geopolymers in the form of highly soluble salt - lead-nitrate. Structural changes of geopolymers as a result of lead addition/immobilization were assessed by means of XRD, SEM/EDS, and Si-29 MAS NMR analysis. Investigated curing conditions significantly influenced structure, strength and leaching behavior of geopolymers. High addition of lead caused a sizeable decrease in compressive strength of geopolymers and promoted formation of aluminum-deficient aluminosilicate gel (de polymerization of aluminosilicate gel), regardless of the curing conditions investigated. According to the EUWAC limitations, 4% of lead was successfully immobilized by fly ash-based geopolymers cured for 28 days in a humid chamber at room temperature.",
publisher = "Elsevier B.V.",
journal = "Journal of Hazardous Materials",
title = "The influence of Pb addition on the properties of fly ash-based geopolymers",
pages = "107-98",
volume = "350",
doi = "10.1016/j.jhazmat.2018.02.023"
}

Nikolić, V., Komljenović, M. M., Džunuzović, N.,& Miladinović, Z. P.. (2018). The influence of Pb addition on the properties of fly ash-based geopolymers. in Journal of Hazardous Materials
Elsevier B.V.., 350, 98-107.
https://doi.org/10.1016/j.jhazmat.2018.02.023

Nikolić V, Komljenović MM, Džunuzović N, Miladinović ZP. The influence of Pb addition on the properties of fly ash-based geopolymers. in Journal of Hazardous Materials. 2018;350:98-107.
doi:10.1016/j.jhazmat.2018.02.023 .

Nikolić, V., Komljenović, Miroslav M, Džunuzović, Nataša, Miladinović, Zoran P., "The influence of Pb addition on the properties of fly ash-based geopolymers" in Journal of Hazardous Materials, 350 (2018):98-107,
https://doi.org/10.1016/j.jhazmat.2018.02.023 . .

TY  - JOUR
AU  - Ivanović, Tijana
AU  - Popović, Daniela Z.
AU  - Rard, Joseph A.
AU  - Grujic, Snežana R.
AU  - Miladinović, Zoran P.
AU  - Miladinović, Jelena
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1049
AB  - Isopiestic (vapor pressure) measurements were made for aqueous mixtures of Mg(NO3)(2) and MgSO4 at T = (298.15 +/- 0.01) K with Mg(NO3)(2) ionic strength fractions y = (0.19691, 0.42542, 0.60113, 0.79583, and 1), along with a separate series of measurements for MgSO4(aq), y = 0, all using KCl(aq) as the reference standard. The resulting 44 molality-based osmotic coefficients for the ternary mixtures, ionic strength range I-m = (2.5924-8.4583) mol-kg(-1), were modeled with an extended form of Pitzer's ion interaction model, both with the usual Pitzer mixing terms and also with Scatchard's neutral electrolyte model mixing terms, and also with the Clegg-Pitzer-Brimblecombe model based on the mole-fraction-composition scale. The molality-based osmotic coefficients phi of these mixtures at each fixed ionic strength fraction fall in a regular order between those of the corresponding limiting binary solutions with no crossovers in this ionic strength range. Model parameters for Mg(NO3)(2)(aq) and MgSO4(aq) at T = 298.15 K needed for these calculations were evaluated by using the present isopiestic results along with other sets of reliable osmotic coefficients gleaned from the published literature. Our osmotic coefficients for the ternary system are compared with those from a previous isopiestic study and a hygrometric study and the present results were judged to be more accurate. For this ternary system, both mixing parameters are needed for the extended Pitzer model with Pitzer mixing terms {standard uncertainty of fit u(phi)= 7.0 x 10(-3)} whereas three parameters gave a significantly better fit when the Scatchard mixing terms are used {standard uncertainty of fit u(phi) = 4.0 x 10(-3); the fits with two Scatchard mixing parameters did slightly better than the fit with both Pitzer mixing terms}, as did the Clegg-Pitzer-Brimblecombe model with three mixing parameters {standard uncertainty of fit u(phi) = 5.9 x 10(-3)}, with use of the three Scatchard mixing parameters giving the most precise representation of the experimental results. Including higher-order electrostatic mixing terms did not improve the representations but had the opposite effect.
PB  - Academic Press Ltd- Elsevier Science Ltd, London
T2  - Journal of Chemical Thermodynamics
T1  - Isopiestic determination of the osmotic and activity coefficients of the {yMg(NO3)(2) + (1-y)MgSO4}(aq) system at T=298.15 K
EP  - 103
SP  - 91
VL  - 113
DO  - 10.1016/j.jct.2017.05.006
ER  - 

@article{
author = "Ivanović, Tijana and Popović, Daniela Z. and Rard, Joseph A. and Grujic, Snežana R. and Miladinović, Zoran P. and Miladinović, Jelena",
year = "2017",
abstract = "Isopiestic (vapor pressure) measurements were made for aqueous mixtures of Mg(NO3)(2) and MgSO4 at T = (298.15 +/- 0.01) K with Mg(NO3)(2) ionic strength fractions y = (0.19691, 0.42542, 0.60113, 0.79583, and 1), along with a separate series of measurements for MgSO4(aq), y = 0, all using KCl(aq) as the reference standard. The resulting 44 molality-based osmotic coefficients for the ternary mixtures, ionic strength range I-m = (2.5924-8.4583) mol-kg(-1), were modeled with an extended form of Pitzer's ion interaction model, both with the usual Pitzer mixing terms and also with Scatchard's neutral electrolyte model mixing terms, and also with the Clegg-Pitzer-Brimblecombe model based on the mole-fraction-composition scale. The molality-based osmotic coefficients phi of these mixtures at each fixed ionic strength fraction fall in a regular order between those of the corresponding limiting binary solutions with no crossovers in this ionic strength range. Model parameters for Mg(NO3)(2)(aq) and MgSO4(aq) at T = 298.15 K needed for these calculations were evaluated by using the present isopiestic results along with other sets of reliable osmotic coefficients gleaned from the published literature. Our osmotic coefficients for the ternary system are compared with those from a previous isopiestic study and a hygrometric study and the present results were judged to be more accurate. For this ternary system, both mixing parameters are needed for the extended Pitzer model with Pitzer mixing terms {standard uncertainty of fit u(phi)= 7.0 x 10(-3)} whereas three parameters gave a significantly better fit when the Scatchard mixing terms are used {standard uncertainty of fit u(phi) = 4.0 x 10(-3); the fits with two Scatchard mixing parameters did slightly better than the fit with both Pitzer mixing terms}, as did the Clegg-Pitzer-Brimblecombe model with three mixing parameters {standard uncertainty of fit u(phi) = 5.9 x 10(-3)}, with use of the three Scatchard mixing parameters giving the most precise representation of the experimental results. Including higher-order electrostatic mixing terms did not improve the representations but had the opposite effect.",
publisher = "Academic Press Ltd- Elsevier Science Ltd, London",
journal = "Journal of Chemical Thermodynamics",
title = "Isopiestic determination of the osmotic and activity coefficients of the {yMg(NO3)(2) + (1-y)MgSO4}(aq) system at T=298.15 K",
pages = "103-91",
volume = "113",
doi = "10.1016/j.jct.2017.05.006"
}

Ivanović, T., Popović, D. Z., Rard, J. A., Grujic, S. R., Miladinović, Z. P.,& Miladinović, J.. (2017). Isopiestic determination of the osmotic and activity coefficients of the {yMg(NO3)(2) + (1-y)MgSO4}(aq) system at T=298.15 K. in Journal of Chemical Thermodynamics
Academic Press Ltd- Elsevier Science Ltd, London., 113, 91-103.
https://doi.org/10.1016/j.jct.2017.05.006

Ivanović T, Popović DZ, Rard JA, Grujic SR, Miladinović ZP, Miladinović J. Isopiestic determination of the osmotic and activity coefficients of the {yMg(NO3)(2) + (1-y)MgSO4}(aq) system at T=298.15 K. in Journal of Chemical Thermodynamics. 2017;113:91-103.
doi:10.1016/j.jct.2017.05.006 .

Ivanović, Tijana, Popović, Daniela Z., Rard, Joseph A., Grujic, Snežana R., Miladinović, Zoran P., Miladinović, Jelena, "Isopiestic determination of the osmotic and activity coefficients of the {yMg(NO3)(2) + (1-y)MgSO4}(aq) system at T=298.15 K" in Journal of Chemical Thermodynamics, 113 (2017):91-103,
https://doi.org/10.1016/j.jct.2017.05.006 . .

TY  - JOUR
AU  - Nikolić, Violeta
AU  - Komljenović, Miroslav M
AU  - Džunuzović, Nataša
AU  - Ivanović, Tijana
AU  - Miladinović, Zoran P.
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1041
AB  - In this paper the immobilization of hexavalent chromium (Cr (VI)) by fly ash (FA)-based geopolymers was investigated, depending on FA characteristics, mechanical activation of FA, geopolymer synthesis conditions and concentration of Cr added. The effectiveness of Cr immobilization was determined via investigation of geopolymer compressive strength and Cr leaching. Structural changes of geopolymers during the Cr immobilization were assessed by means of gas adsorption, XRD, and NMR analysis. FA reactivity was a key factor determining both physical-mechanical and immobilizing properties of geopolymers. Mechanical activation of FA caused an increase of both geopolymer strength and effectiveness of Cr immobilization. The presence of Cr induced physical-mechanical and structural changes in geopolymers. The correlation between concentration of Cr leached and geopolymer physical-mechanical and structural parameters was established.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Immobilization of hexavalent chromium by fly ash-based geopolymers
EP  - 223
SP  - 213
VL  - 112
DO  - 10.1016/j.compositesb.2016.12.024
ER  - 

@article{
author = "Nikolić, Violeta and Komljenović, Miroslav M and Džunuzović, Nataša and Ivanović, Tijana and Miladinović, Zoran P.",
year = "2017",
abstract = "In this paper the immobilization of hexavalent chromium (Cr (VI)) by fly ash (FA)-based geopolymers was investigated, depending on FA characteristics, mechanical activation of FA, geopolymer synthesis conditions and concentration of Cr added. The effectiveness of Cr immobilization was determined via investigation of geopolymer compressive strength and Cr leaching. Structural changes of geopolymers during the Cr immobilization were assessed by means of gas adsorption, XRD, and NMR analysis. FA reactivity was a key factor determining both physical-mechanical and immobilizing properties of geopolymers. Mechanical activation of FA caused an increase of both geopolymer strength and effectiveness of Cr immobilization. The presence of Cr induced physical-mechanical and structural changes in geopolymers. The correlation between concentration of Cr leached and geopolymer physical-mechanical and structural parameters was established.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Immobilization of hexavalent chromium by fly ash-based geopolymers",
pages = "223-213",
volume = "112",
doi = "10.1016/j.compositesb.2016.12.024"
}

Nikolić, V., Komljenović, M. M., Džunuzović, N., Ivanović, T.,& Miladinović, Z. P.. (2017). Immobilization of hexavalent chromium by fly ash-based geopolymers. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 112, 213-223.
https://doi.org/10.1016/j.compositesb.2016.12.024

Nikolić V, Komljenović MM, Džunuzović N, Ivanović T, Miladinović ZP. Immobilization of hexavalent chromium by fly ash-based geopolymers. in Composites Part B-Engineering. 2017;112:213-223.
doi:10.1016/j.compositesb.2016.12.024 .

Nikolić, Violeta, Komljenović, Miroslav M, Džunuzović, Nataša, Ivanović, Tijana, Miladinović, Zoran P., "Immobilization of hexavalent chromium by fly ash-based geopolymers" in Composites Part B-Engineering, 112 (2017):213-223,
https://doi.org/10.1016/j.compositesb.2016.12.024 . .

TY  - JOUR
AU  - Žižić, Milan
AU  - Miladinović, Zoran P.
AU  - Stanić, Marina
AU  - Hadzibrahimović, Mirzeta
AU  - Zivić, Miroslav
AU  - Zakrzewska, Joanna
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/986
AB  - V-51 NMR spectroscopy was used for detection and identification of cell-associated vanadate (V5+) species after exposure of Phycomyces blakesleeanus mycelium, in exponential phase of growth, to sodium orthovanadate. Complete disappearance of monomer and dimer signals and decreased intensity of the tetramer signal were observed about 40 min after treatment. Simultaneously, a signal at -532 ppm, with increasing intensity, was detected in spectra. The time-dependent rise in this signal was connected to a decrease in the extracellular monomer signal, indicating its transport into the cell. The signal at -532 ppm did not belong to any known simple oxido-vanadate species, nor to a complex with any of the components of experimental medium. This signal was the only one present in spectrum of the mycelium washed 35 min after treatment, and the only one observed in mycelium cultivated on vanadate-contained medium. Therefore, its appearance can be attributed to intracellular complexation, and may represent an important detoxification mechanism of the cell exposed to a physiologically relevant concentration of vanadate. Experiments (V-51 NMR and polarography) performed with Cd-pretreated mycelium (inhibitor of an enzyme responsible for V5+ reduction) and ferricyanide-preincubated mycelium excluded the possibility of V5+ tetramer's entry into the cell.
PB  - Elsevier Science Bv, Amsterdam
T2  - Research in Microbiology
T1  - V-51 NMR investigation of cell-associated vanadate species in Phycomyces blakesleeanus mycelium
EP  - 528
IS  - 6
SP  - 521
VL  - 167
DO  - 10.1016/j.resmic.2016.04.012
ER  - 

@article{
author = "Žižić, Milan and Miladinović, Zoran P. and Stanić, Marina and Hadzibrahimović, Mirzeta and Zivić, Miroslav and Zakrzewska, Joanna",
year = "2016",
abstract = "V-51 NMR spectroscopy was used for detection and identification of cell-associated vanadate (V5+) species after exposure of Phycomyces blakesleeanus mycelium, in exponential phase of growth, to sodium orthovanadate. Complete disappearance of monomer and dimer signals and decreased intensity of the tetramer signal were observed about 40 min after treatment. Simultaneously, a signal at -532 ppm, with increasing intensity, was detected in spectra. The time-dependent rise in this signal was connected to a decrease in the extracellular monomer signal, indicating its transport into the cell. The signal at -532 ppm did not belong to any known simple oxido-vanadate species, nor to a complex with any of the components of experimental medium. This signal was the only one present in spectrum of the mycelium washed 35 min after treatment, and the only one observed in mycelium cultivated on vanadate-contained medium. Therefore, its appearance can be attributed to intracellular complexation, and may represent an important detoxification mechanism of the cell exposed to a physiologically relevant concentration of vanadate. Experiments (V-51 NMR and polarography) performed with Cd-pretreated mycelium (inhibitor of an enzyme responsible for V5+ reduction) and ferricyanide-preincubated mycelium excluded the possibility of V5+ tetramer's entry into the cell.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Research in Microbiology",
title = "V-51 NMR investigation of cell-associated vanadate species in Phycomyces blakesleeanus mycelium",
pages = "528-521",
number = "6",
volume = "167",
doi = "10.1016/j.resmic.2016.04.012"
}

Žižić, M., Miladinović, Z. P., Stanić, M., Hadzibrahimović, M., Zivić, M.,& Zakrzewska, J.. (2016). V-51 NMR investigation of cell-associated vanadate species in Phycomyces blakesleeanus mycelium. in Research in Microbiology
Elsevier Science Bv, Amsterdam., 167(6), 521-528.
https://doi.org/10.1016/j.resmic.2016.04.012

Žižić M, Miladinović ZP, Stanić M, Hadzibrahimović M, Zivić M, Zakrzewska J. V-51 NMR investigation of cell-associated vanadate species in Phycomyces blakesleeanus mycelium. in Research in Microbiology. 2016;167(6):521-528.
doi:10.1016/j.resmic.2016.04.012 .

Žižić, Milan, Miladinović, Zoran P., Stanić, Marina, Hadzibrahimović, Mirzeta, Zivić, Miroslav, Zakrzewska, Joanna, "V-51 NMR investigation of cell-associated vanadate species in Phycomyces blakesleeanus mycelium" in Research in Microbiology, 167, no. 6 (2016):521-528,
https://doi.org/10.1016/j.resmic.2016.04.012 . .

TY  - CONF
AU  - Baščarević, Zvezdana
AU  - Komljenović, Miroslav M
AU  - Džunuzović, Nataša
AU  - Miladinović, Zoran
AU  - Nikolic, Violeta
AU  - Petrašinović-Stojkanović, Ljiljana
AU  - Ršumović, Mihailo
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2991
AB  - In the last decade, great scientific attention has been devoted to alkali activated materials, including geopolymers and other related materials. These materials are seen as promising alternative binders, with a possibility to reduce CO2 emission associated with production of traditionally used Portland cement. Alkali activated materials are produced by reaction of solid silicate and/or aluminosilicate precursors with alkaline solution. Possibility to use waste materials, such as fly ash and blast furnace slag, as raw materials for alkali activated materials production is the second advantage of these alternative binders. However, wider commercial adoption of alkali activated materials is somewhat hindered by the lack of data on long-term properties and durability. In this work, we will give an overview of the results obtained when alkali activated materials are subjected to different aggressive environments.
PB  - Institute for Multidisciplinary Research, University of Belgrade
C3  - 3rd Conference of the Serbian Society for Ceramic Materials
T1  - Durability of alkali activated materials
EP  - 50
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2991
ER  - 

@conference{
author = "Baščarević, Zvezdana and Komljenović, Miroslav M and Džunuzović, Nataša and Miladinović, Zoran and Nikolic, Violeta and Petrašinović-Stojkanović, Ljiljana and Ršumović, Mihailo",
year = "2015",
abstract = "In the last decade, great scientific attention has been devoted to alkali activated materials, including geopolymers and other related materials. These materials are seen as promising alternative binders, with a possibility to reduce CO2 emission associated with production of traditionally used Portland cement. Alkali activated materials are produced by reaction of solid silicate and/or aluminosilicate precursors with alkaline solution. Possibility to use waste materials, such as fly ash and blast furnace slag, as raw materials for alkali activated materials production is the second advantage of these alternative binders. However, wider commercial adoption of alkali activated materials is somewhat hindered by the lack of data on long-term properties and durability. In this work, we will give an overview of the results obtained when alkali activated materials are subjected to different aggressive environments.",
publisher = "Institute for Multidisciplinary Research, University of Belgrade",
journal = "3rd Conference of the Serbian Society for Ceramic Materials",
title = "Durability of alkali activated materials",
pages = "50-50",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2991"
}

Baščarević, Z., Komljenović, M. M., Džunuzović, N., Miladinović, Z., Nikolic, V., Petrašinović-Stojkanović, L.,& Ršumović, M.. (2015). Durability of alkali activated materials. in 3rd Conference of the Serbian Society for Ceramic Materials
Institute for Multidisciplinary Research, University of Belgrade., 50-50.
https://hdl.handle.net/21.15107/rcub_rimsi_2991

Baščarević Z, Komljenović MM, Džunuzović N, Miladinović Z, Nikolic V, Petrašinović-Stojkanović L, Ršumović M. Durability of alkali activated materials. in 3rd Conference of the Serbian Society for Ceramic Materials. 2015;:50-50.
https://hdl.handle.net/21.15107/rcub_rimsi_2991 .

Baščarević, Zvezdana, Komljenović, Miroslav M, Džunuzović, Nataša, Miladinović, Zoran, Nikolic, Violeta, Petrašinović-Stojkanović, Ljiljana, Ršumović, Mihailo, "Durability of alkali activated materials" in 3rd Conference of the Serbian Society for Ceramic Materials (2015):50-50,
https://hdl.handle.net/21.15107/rcub_rimsi_2991 .

TY  - JOUR
AU  - Baščarević, Zvezdana
AU  - Komljenović, Miroslav M
AU  - Miladinović, Zoran P.
AU  - Nikolić, Violeta
AU  - Džunuzović, Nataša
AU  - Petrović, Rada
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/892
AB  - In this paper, geopolymers based on two different fly ash samples were exposed to sodium sulfate (Na2SO4) solution (50 g/l) over a period of 365 days. It was found that sulfate solution attack caused a small decrease in strength of geopolymer mortars. Analysis of the Na2SO4 solutions by optical emission spectroscopy indicated that exposing of the geopolymer samples to the Na2SO4 solution had caused leaching of one of the elements of the aluminosilicate gel, silicon. Mineralogical analyses of geopolymer samples did not show formation of any new phases due to a reaction with sulfate ions. Changes in aluminosilicate geopolymer gel due to sulfate attack were investigated by electron microscopy and nuclear magnetic resonance. It was found that treatment of geopolymer samples with the sulfate solution caused breaking of -Si-O-Si- bonds in aluminosilicate gel structure. Breaking of the -Si-O-Si- bonds and leaching of Si were consequences of the increase in the pH value of sulfate solution during testing.
PB  - Springer, Dordrecht
T2  - Materials and Structures
T1  - Impact of sodium sulfate solution on mechanical properties and structure of fly ash based geopolymers
EP  - 697
IS  - 3
SP  - 683
VL  - 48
DO  - 10.1617/s11527-014-0325-4
ER  - 

@article{
author = "Baščarević, Zvezdana and Komljenović, Miroslav M and Miladinović, Zoran P. and Nikolić, Violeta and Džunuzović, Nataša and Petrović, Rada",
year = "2015",
abstract = "In this paper, geopolymers based on two different fly ash samples were exposed to sodium sulfate (Na2SO4) solution (50 g/l) over a period of 365 days. It was found that sulfate solution attack caused a small decrease in strength of geopolymer mortars. Analysis of the Na2SO4 solutions by optical emission spectroscopy indicated that exposing of the geopolymer samples to the Na2SO4 solution had caused leaching of one of the elements of the aluminosilicate gel, silicon. Mineralogical analyses of geopolymer samples did not show formation of any new phases due to a reaction with sulfate ions. Changes in aluminosilicate geopolymer gel due to sulfate attack were investigated by electron microscopy and nuclear magnetic resonance. It was found that treatment of geopolymer samples with the sulfate solution caused breaking of -Si-O-Si- bonds in aluminosilicate gel structure. Breaking of the -Si-O-Si- bonds and leaching of Si were consequences of the increase in the pH value of sulfate solution during testing.",
publisher = "Springer, Dordrecht",
journal = "Materials and Structures",
title = "Impact of sodium sulfate solution on mechanical properties and structure of fly ash based geopolymers",
pages = "697-683",
number = "3",
volume = "48",
doi = "10.1617/s11527-014-0325-4"
}

Baščarević, Z., Komljenović, M. M., Miladinović, Z. P., Nikolić, V., Džunuzović, N.,& Petrović, R.. (2015). Impact of sodium sulfate solution on mechanical properties and structure of fly ash based geopolymers. in Materials and Structures
Springer, Dordrecht., 48(3), 683-697.
https://doi.org/10.1617/s11527-014-0325-4

Baščarević Z, Komljenović MM, Miladinović ZP, Nikolić V, Džunuzović N, Petrović R. Impact of sodium sulfate solution on mechanical properties and structure of fly ash based geopolymers. in Materials and Structures. 2015;48(3):683-697.
doi:10.1617/s11527-014-0325-4 .

Baščarević, Zvezdana, Komljenović, Miroslav M, Miladinović, Zoran P., Nikolić, Violeta, Džunuzović, Nataša, Petrović, Rada, "Impact of sodium sulfate solution on mechanical properties and structure of fly ash based geopolymers" in Materials and Structures, 48, no. 3 (2015):683-697,
https://doi.org/10.1617/s11527-014-0325-4 . .

TY  - JOUR
AU  - Nikolić, Violeta
AU  - Komljenović, Miroslav M
AU  - Baščarević, Zvezdana
AU  - Džunuzović, Nataša
AU  - Miladinović, Zoran P.
AU  - Petrović, Rada
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/825
AB  - Reactivity of Class F fly ash (FA), development of strength, and structure of FA-based geopolymers, depending on the reaction conditions, were examined in this paper. The results of SEM/EDS and NMR analyses revealed that the composition of aluminosilicate gel changed during reaction, i.e. Si/Al atomic ratio decreased with the reaction time. Higher strength of geopolymers was associated with a higher fraction of aluminum rich structural units, higher crosslinking, and more compact structure. A rapid test for the assessment of FA reactivity and thus the applicability of FA for geopolymer synthesis was proposed.
PB  - Elsevier Sci Ltd, Oxford
T2  - Construction and Building Materials
T1  - The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers
EP  - 370
SP  - 361
VL  - 94
DO  - 10.1016/j.conbuildmat.2015.07.014
ER  - 

@article{
author = "Nikolić, Violeta and Komljenović, Miroslav M and Baščarević, Zvezdana and Džunuzović, Nataša and Miladinović, Zoran P. and Petrović, Rada",
year = "2015",
abstract = "Reactivity of Class F fly ash (FA), development of strength, and structure of FA-based geopolymers, depending on the reaction conditions, were examined in this paper. The results of SEM/EDS and NMR analyses revealed that the composition of aluminosilicate gel changed during reaction, i.e. Si/Al atomic ratio decreased with the reaction time. Higher strength of geopolymers was associated with a higher fraction of aluminum rich structural units, higher crosslinking, and more compact structure. A rapid test for the assessment of FA reactivity and thus the applicability of FA for geopolymer synthesis was proposed.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Construction and Building Materials",
title = "The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers",
pages = "370-361",
volume = "94",
doi = "10.1016/j.conbuildmat.2015.07.014"
}

Nikolić, V., Komljenović, M. M., Baščarević, Z., Džunuzović, N., Miladinović, Z. P.,& Petrović, R.. (2015). The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers. in Construction and Building Materials
Elsevier Sci Ltd, Oxford., 94, 361-370.
https://doi.org/10.1016/j.conbuildmat.2015.07.014

Nikolić V, Komljenović MM, Baščarević Z, Džunuzović N, Miladinović ZP, Petrović R. The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers. in Construction and Building Materials. 2015;94:361-370.
doi:10.1016/j.conbuildmat.2015.07.014 .

Nikolić, Violeta, Komljenović, Miroslav M, Baščarević, Zvezdana, Džunuzović, Nataša, Miladinović, Zoran P., Petrović, Rada, "The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers" in Construction and Building Materials, 94 (2015):361-370,
https://doi.org/10.1016/j.conbuildmat.2015.07.014 . .

TY  - JOUR
AU  - Baščarević, Zvezdana
AU  - Komljenović, Miroslav M
AU  - Miladinović, Zoran P.
AU  - Nikolić, Violeta
AU  - Džunuzović, Nataša
AU  - Zujović, Zoran D
AU  - Petrović, Rada D
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/724
AB  - The geopolymers based on fly ash were exposed to the concentrated (6 M) NH4NO3 solution for 540 days. The highest compressive strength decrease occurred in the initial 28 days testing period. Study of the effects of the NH4NO3 solution on the geopolymer structure indicated leaching of alkali and alkaline earth cations and breaking of -Si-O-Al- bonds in aluminosilicate gel. The reduction of compressive strength of the geopolymers was associated with the structural defects in the aluminosilicate gel created by breaking of -Si-O-Al- bonds. Subsequent fluctuation in compressive strength was a result of the structural defects reparation by silicon.
PB  - Elsevier Sci Ltd, Oxford
T2  - Construction and Building Materials
T1  - Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers
EP  - 579
SP  - 570
VL  - 41
DO  - 10.1016/j.conbuildmat.2012.12.067
ER  - 

@article{
author = "Baščarević, Zvezdana and Komljenović, Miroslav M and Miladinović, Zoran P. and Nikolić, Violeta and Džunuzović, Nataša and Zujović, Zoran D and Petrović, Rada D",
year = "2013",
abstract = "The geopolymers based on fly ash were exposed to the concentrated (6 M) NH4NO3 solution for 540 days. The highest compressive strength decrease occurred in the initial 28 days testing period. Study of the effects of the NH4NO3 solution on the geopolymer structure indicated leaching of alkali and alkaline earth cations and breaking of -Si-O-Al- bonds in aluminosilicate gel. The reduction of compressive strength of the geopolymers was associated with the structural defects in the aluminosilicate gel created by breaking of -Si-O-Al- bonds. Subsequent fluctuation in compressive strength was a result of the structural defects reparation by silicon.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Construction and Building Materials",
title = "Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers",
pages = "579-570",
volume = "41",
doi = "10.1016/j.conbuildmat.2012.12.067"
}

Baščarević, Z., Komljenović, M. M., Miladinović, Z. P., Nikolić, V., Džunuzović, N., Zujović, Z. D.,& Petrović, R. D.. (2013). Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers. in Construction and Building Materials
Elsevier Sci Ltd, Oxford., 41, 570-579.
https://doi.org/10.1016/j.conbuildmat.2012.12.067

Baščarević Z, Komljenović MM, Miladinović ZP, Nikolić V, Džunuzović N, Zujović ZD, Petrović RD. Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers. in Construction and Building Materials. 2013;41:570-579.
doi:10.1016/j.conbuildmat.2012.12.067 .

Baščarević, Zvezdana, Komljenović, Miroslav M, Miladinović, Zoran P., Nikolić, Violeta, Džunuzović, Nataša, Zujović, Zoran D, Petrović, Rada D, "Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers" in Construction and Building Materials, 41 (2013):570-579,
https://doi.org/10.1016/j.conbuildmat.2012.12.067 . .

Džunuzović, N., Komljenović, M. M., Petrašinović-Stojkanović, L., Baščarević, Z., Nikolić, V., Ršumović, M.,& Miladinović, Z.. (2012). Технолошки поступак синтезе геопполимера механо-хемијско-термичком активацијом електрофилтерског пепела из термоелектране ''Никола Тесла'', Обреновац. in 2012.
https://hdl.handle.net/21.15107/rcub_rimsi_2691

Džunuzović N, Komljenović MM, Petrašinović-Stojkanović L, Baščarević Z, Nikolić V, Ršumović M, Miladinović Z. Технолошки поступак синтезе геопполимера механо-хемијско-термичком активацијом електрофилтерског пепела из термоелектране ''Никола Тесла'', Обреновац. in 2012. 2012;.
https://hdl.handle.net/21.15107/rcub_rimsi_2691 .

Džunuzović, Nataša, Komljenović, Miroslav M, Petrašinović-Stojkanović, Ljiljana, Baščarević, Zvezdana, Nikolić, Violeta, Ršumović, Mihailo, Miladinović, Zoran, "Технолошки поступак синтезе геопполимера механо-хемијско-термичком активацијом електрофилтерског пепела из термоелектране ''Никола Тесла'', Обреновац" in 2012 (2012),
https://hdl.handle.net/21.15107/rcub_rimsi_2691 .

Nikolić, V., Komljenović, M. M., Petrašinović-Stojkanović, L., Baščarević, Z., Džunuzović, N., Ršumović, M.,& Miladinović, Z.. (2011). Технолошки поступак солидификације електрофилтерског пепела ТЕ ''Морава'' синтезом геополимера. in 2011.
https://hdl.handle.net/21.15107/rcub_rimsi_2746

Nikolić V, Komljenović MM, Petrašinović-Stojkanović L, Baščarević Z, Džunuzović N, Ršumović M, Miladinović Z. Технолошки поступак солидификације електрофилтерског пепела ТЕ ''Морава'' синтезом геополимера. in 2011. 2011;.
https://hdl.handle.net/21.15107/rcub_rimsi_2746 .

Nikolić, Violeta, Komljenović, Miroslav M, Petrašinović-Stojkanović, Ljiljana, Baščarević, Zvezdana, Džunuzović, Nataša, Ršumović, Mihailo, Miladinović, Zoran, "Технолошки поступак солидификације електрофилтерског пепела ТЕ ''Морава'' синтезом геополимера" in 2011 (2011),
https://hdl.handle.net/21.15107/rcub_rimsi_2746 .