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  - Pastor, Ferenc
AU  - Dojčinović, Biljana P.
AU  - Kodranov, Igor D.
AU  - Gorjanović, Stanislava Ž.
AU  - Ivanović, Tijana
AU  - Popović, Daniela Ž.
AU  - Miladinović, Jelena
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3095
AB  - Due to the similar chemical properties of Ni2+ and Co2+, several dozens of adsorptive stripping voltammetric (AdSV)
methods have been developed for their simultaneous determination. The question was would there be some benefits
if a stripping method made for simultaneous determination of Ni2+ and Co2+ will be optimized for the determination
of only one of them (Ni2+). It was found that the optimized method has for an order of magnitude lower LOQ (1.89 ×
10-10 M), an order of magnitude lower influence of Co2+, and the applicability of one calibration line for four orders
of magnitude of Ni2+ concentration. The influence of some common anions and cations has been examined. The
developed method was successfully applied for nickel content determination in real samples. The suitability of the
developed method for the determination of Co2+ from the same solution in the second run, upon optimizations of
deposition potential and time, was also explored. The LOQ obtained for Co2+ (3.61 × 10-11 M) is almost two orders
of magnitude lower than LOQ of the method for simultaneous determination of both cations and, its LOD and LOQ
are among few lowest obtained by AdSV methods for Co2+ determination. The developed method for Ni2+ and Co2+
determination from the same solution in two successive runs has significantly better analytical performances than
the starting method for their simultaneous determination in one run.
PB  - John Wiley and Sons Inc.
T2  - Electroanalysis
T1  - 2 in 1versus 1plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination
DO  - 10.1002/elan.202300259
ER  - 

@article{
author = "Pastor, Ferenc and Dojčinović, Biljana P. and Kodranov, Igor D. and Gorjanović, Stanislava Ž. and Ivanović, Tijana and Popović, Daniela Ž. and Miladinović, Jelena",
year = "2023",
abstract = "Due to the similar chemical properties of Ni2+ and Co2+, several dozens of adsorptive stripping voltammetric (AdSV)
methods have been developed for their simultaneous determination. The question was would there be some benefits
if a stripping method made for simultaneous determination of Ni2+ and Co2+ will be optimized for the determination
of only one of them (Ni2+). It was found that the optimized method has for an order of magnitude lower LOQ (1.89 ×
10-10 M), an order of magnitude lower influence of Co2+, and the applicability of one calibration line for four orders
of magnitude of Ni2+ concentration. The influence of some common anions and cations has been examined. The
developed method was successfully applied for nickel content determination in real samples. The suitability of the
developed method for the determination of Co2+ from the same solution in the second run, upon optimizations of
deposition potential and time, was also explored. The LOQ obtained for Co2+ (3.61 × 10-11 M) is almost two orders
of magnitude lower than LOQ of the method for simultaneous determination of both cations and, its LOD and LOQ
are among few lowest obtained by AdSV methods for Co2+ determination. The developed method for Ni2+ and Co2+
determination from the same solution in two successive runs has significantly better analytical performances than
the starting method for their simultaneous determination in one run.",
publisher = "John Wiley and Sons Inc.",
journal = "Electroanalysis",
title = "2 in 1versus 1plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination",
doi = "10.1002/elan.202300259"
}

Pastor, F., Dojčinović, B. P., Kodranov, I. D., Gorjanović, S. Ž., Ivanović, T., Popović, D. Ž.,& Miladinović, J.. (2023). 2 in 1versus 1plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination. in Electroanalysis
John Wiley and Sons Inc...
https://doi.org/10.1002/elan.202300259

Pastor F, Dojčinović BP, Kodranov ID, Gorjanović SŽ, Ivanović T, Popović DŽ, Miladinović J. 2 in 1versus 1plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination. in Electroanalysis. 2023;.
doi:10.1002/elan.202300259 .

Pastor, Ferenc, Dojčinović, Biljana P., Kodranov, Igor D., Gorjanović, Stanislava Ž., Ivanović, Tijana, Popović, Daniela Ž., Miladinović, Jelena, "2 in 1versus 1plus 1 – Outcomes of the transformation of adsorptive stripping method for the Ni2+ and Co2+ determination" in Electroanalysis (2023),
https://doi.org/10.1002/elan.202300259 . .

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  - Ivanović, Tijana
AU  - Popović, Daniela Ž.
AU  - Miladinović, Jelena
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3067
AB  - Zero-current cell-potential measurements were used to determine the solution activity coefficient in a ternary system {yNaCl + (1-y)NaH2PO4}(aq) at a temperature T = 298.15 K, in the total ionic strength range I =  (0.1-1.0) molkg-1. The Na–ISENaCl(mNaCl), Na2HPO4 ( )AgAgCl, cell was used where m_NaCl and m_(NaH_2 PO_4 ) are the stoichiometric molalities of the NaCl and NaH2PO4 electrolytes in the mixture.  The ionic strength fraction of NaCl in the total ionic strength of the mixed solution was y = (0.199;0.310; 0.4101; 0.5051; 0.6090; 0.7776; 0.9037). The standard electrode potential of the electrode pair is Eo = 23.22737 mV. The values of the mean ionic coefficients of NaCl in the mixed electrolyte solution, γ_(±NaCl) , were estimated using Nerst equation (1):   (1)
where E_m is the electrode potential of the cell, γ_(〖±NaH〗_2 PO_4 ) is mean ionic activity coefficient of NaH2PO4 in the mixture and Kpot is selectivity coefficient having values less than  K^pot<10^(-4)  and therefore, was neglected.
The ionic strength of the solution is I =〖 m〗_NaCl+m_(NaH_2 PO_4 ) whereas the ionic strength fraction of NaCl is: y=〖 m〗_NaCl/I. To generate a set of parameters for the system {yNaCl + (1-y)NaH2PO4}(aq) that can be applied in the investigated range of mixed solution ionic strengths, Pitzer models[1] were used to fit the experimental data, represented in Figure 1. Parameter values for the pure electrolyte solutions of the second and third virial coefficients, B_NaCl 〖,B〗_(NaH_2 PO_4 ),〖 C〗_NaCl^T,〖 C〗_(NaH_2 PO_4)^T, respectively, that are mixture components, were taken from literature[2,3]. The treatment of experimental data using Pitzer’s model yielded the following values of the mixing parameters θ_(Cl,〖H_2 PO〗_4 ) = - 0.710 and Ψ_(Na,Cl,〖H_2 PO〗_4 ) = 0.1269.The experimental and calculated values of the thermodynamic properties of the studied system were in excellent agreement, with standard deviation s.d. (NaCl)= 0.0041
C3  - 38th International Conference on Solution Chemistry, 9–14 July, 2023, Belgrade, Serbia
T1  - Activity Coefficients of the System {yNaCl+(1–y)NaH2PO4}(aq) at T = 298.15 K
SP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_3067
ER  - 

@conference{
author = "Ivanović, Tijana and Popović, Daniela Ž. and Miladinović, Jelena",
year = "2023",
abstract = "Zero-current cell-potential measurements were used to determine the solution activity coefficient in a ternary system {yNaCl + (1-y)NaH2PO4}(aq) at a temperature T = 298.15 K, in the total ionic strength range I =  (0.1-1.0) molkg-1. The Na–ISENaCl(mNaCl), Na2HPO4 ( )AgAgCl, cell was used where m_NaCl and m_(NaH_2 PO_4 ) are the stoichiometric molalities of the NaCl and NaH2PO4 electrolytes in the mixture.  The ionic strength fraction of NaCl in the total ionic strength of the mixed solution was y = (0.199;0.310; 0.4101; 0.5051; 0.6090; 0.7776; 0.9037). The standard electrode potential of the electrode pair is Eo = 23.22737 mV. The values of the mean ionic coefficients of NaCl in the mixed electrolyte solution, γ_(±NaCl) , were estimated using Nerst equation (1):   (1)
where E_m is the electrode potential of the cell, γ_(〖±NaH〗_2 PO_4 ) is mean ionic activity coefficient of NaH2PO4 in the mixture and Kpot is selectivity coefficient having values less than  K^pot<10^(-4)  and therefore, was neglected.
The ionic strength of the solution is I =〖 m〗_NaCl+m_(NaH_2 PO_4 ) whereas the ionic strength fraction of NaCl is: y=〖 m〗_NaCl/I. To generate a set of parameters for the system {yNaCl + (1-y)NaH2PO4}(aq) that can be applied in the investigated range of mixed solution ionic strengths, Pitzer models[1] were used to fit the experimental data, represented in Figure 1. Parameter values for the pure electrolyte solutions of the second and third virial coefficients, B_NaCl 〖,B〗_(NaH_2 PO_4 ),〖 C〗_NaCl^T,〖 C〗_(NaH_2 PO_4)^T, respectively, that are mixture components, were taken from literature[2,3]. The treatment of experimental data using Pitzer’s model yielded the following values of the mixing parameters θ_(Cl,〖H_2 PO〗_4 ) = - 0.710 and Ψ_(Na,Cl,〖H_2 PO〗_4 ) = 0.1269.The experimental and calculated values of the thermodynamic properties of the studied system were in excellent agreement, with standard deviation s.d. (NaCl)= 0.0041",
journal = "38th International Conference on Solution Chemistry, 9–14 July, 2023, Belgrade, Serbia",
title = "Activity Coefficients of the System {yNaCl+(1–y)NaH2PO4}(aq) at T = 298.15 K",
pages = "101",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_3067"
}

Ivanović, T., Popović, D. Ž.,& Miladinović, J.. (2023). Activity Coefficients of the System {yNaCl+(1–y)NaH2PO4}(aq) at T = 298.15 K. in 38th International Conference on Solution Chemistry, 9–14 July, 2023, Belgrade, Serbia, 101.
https://hdl.handle.net/21.15107/rcub_rimsi_3067

Ivanović T, Popović DŽ, Miladinović J. Activity Coefficients of the System {yNaCl+(1–y)NaH2PO4}(aq) at T = 298.15 K. in 38th International Conference on Solution Chemistry, 9–14 July, 2023, Belgrade, Serbia. 2023;:101.
https://hdl.handle.net/21.15107/rcub_rimsi_3067 .

Ivanović, Tijana, Popović, Daniela Ž., Miladinović, Jelena, "Activity Coefficients of the System {yNaCl+(1–y)NaH2PO4}(aq) at T = 298.15 K" in 38th International Conference on Solution Chemistry, 9–14 July, 2023, Belgrade, Serbia (2023):101,
https://hdl.handle.net/21.15107/rcub_rimsi_3067 .

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  - 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 . .

Džunuzović, N., Ivanović, T., Komljenović, M. M., Ršumović, M.,& Tanasijević, G.. (2019). Tехнолошки поступак синтезе порозних материјала на бази алкално активиране смеше (композита) електрофилтерског пепела из термоелектране „Морава“ - Свилајнац и згуре високе пећи из железаре „Hesteel Serbia Iron & Steel, d.o.o.“ - Смедерево. in 2019.
https://hdl.handle.net/21.15107/rcub_rimsi_2618

Džunuzović N, Ivanović T, Komljenović MM, Ršumović M, Tanasijević G. Tехнолошки поступак синтезе порозних материјала на бази алкално активиране смеше (композита) електрофилтерског пепела из термоелектране „Морава“ - Свилајнац и згуре високе пећи из железаре „Hesteel Serbia Iron & Steel, d.o.o.“ - Смедерево. in 2019. 2019;.
https://hdl.handle.net/21.15107/rcub_rimsi_2618 .

Džunuzović, Nataša, Ivanović, Tijana, Komljenović, Miroslav M, Ršumović, Mihailo, Tanasijević, Gordana, "Tехнолошки поступак синтезе порозних материјала на бази алкално активиране смеше (композита) електрофилтерског пепела из термоелектране „Морава“ - Свилајнац и згуре високе пећи из железаре „Hesteel Serbia Iron & Steel, d.o.o.“ - Смедерево" in 2019 (2019),
https://hdl.handle.net/21.15107/rcub_rimsi_2618 .

TY  - CONF
AU  - Tanasijević, Gordana
AU  - Ivanović, Tijana
AU  - Provis, John L.
AU  - Komljenovic, Miroslav
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2563
AB  - Leaching is a phenomenon of fundamental interest in low-level radioactive waste disposal, and the
measurement of the leaching resistance of different wasteforms is very important for proper waste
management. In general, alkali-activated binders (AABs) can be considered as a sustainable solution
for safe immobilization of hazardous wastes containing different toxic or radioactive elements.
In this paper, the leaching resistance of AAB based on blast furnace slag (BFS), contaminated with 2%
cesium (i.e., solidified simulated low-level radioactive waste), was investigated according to the
ANSI/ANS-16.1-2003 standard procedure.
Based on the leaching results obtained for different elements, in particular for Cs, Si, Al, Ca, Na, and
K, it was concluded that the short (up to 5 days) semi-dynamic process of leaching from AAB can be
divided into two distinct stages: a) fast leaching of non-bound or loosely bound ions during the initial 24
hours, which occurred mostly between the surface of AAB and the leachant, and b) slower leaching in
the later stages of the experiment, which was controlled by diffusion of ions through AAB matrix.
By calculating the diffusion coefficient (D) and the leachability index (L) of cesium, it was also
concluded that AAB based on blast furnace slag, synthesized under the given experimental conditions,
can be considered as a potentially efficient matrix for immobilizing up to 2% cesium in hazardous
wastes.
PB  - Research Institute of Binding Materials Prague Ltd. Na Cikánce 2 153 00 Prague 5 – Radotín Czech Republic
C3  - 15th International Congress on the Chemistry of Cement
T1  - Leaching resistance of alkali-activated binder contaminated with cesium
SP  - 2622/801
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2563
ER  - 

@conference{
author = "Tanasijević, Gordana and Ivanović, Tijana and Provis, John L. and Komljenovic, Miroslav",
year = "2019",
abstract = "Leaching is a phenomenon of fundamental interest in low-level radioactive waste disposal, and the
measurement of the leaching resistance of different wasteforms is very important for proper waste
management. In general, alkali-activated binders (AABs) can be considered as a sustainable solution
for safe immobilization of hazardous wastes containing different toxic or radioactive elements.
In this paper, the leaching resistance of AAB based on blast furnace slag (BFS), contaminated with 2%
cesium (i.e., solidified simulated low-level radioactive waste), was investigated according to the
ANSI/ANS-16.1-2003 standard procedure.
Based on the leaching results obtained for different elements, in particular for Cs, Si, Al, Ca, Na, and
K, it was concluded that the short (up to 5 days) semi-dynamic process of leaching from AAB can be
divided into two distinct stages: a) fast leaching of non-bound or loosely bound ions during the initial 24
hours, which occurred mostly between the surface of AAB and the leachant, and b) slower leaching in
the later stages of the experiment, which was controlled by diffusion of ions through AAB matrix.
By calculating the diffusion coefficient (D) and the leachability index (L) of cesium, it was also
concluded that AAB based on blast furnace slag, synthesized under the given experimental conditions,
can be considered as a potentially efficient matrix for immobilizing up to 2% cesium in hazardous
wastes.",
publisher = "Research Institute of Binding Materials Prague Ltd. Na Cikánce 2 153 00 Prague 5 – Radotín Czech Republic",
journal = "15th International Congress on the Chemistry of Cement",
title = "Leaching resistance of alkali-activated binder contaminated with cesium",
pages = "2622/801",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2563"
}

Tanasijević, G., Ivanović, T., Provis, J. L.,& Komljenovic, M.. (2019). Leaching resistance of alkali-activated binder contaminated with cesium. in 15th International Congress on the Chemistry of Cement
Research Institute of Binding Materials Prague Ltd. Na Cikánce 2 153 00 Prague 5 – Radotín Czech Republic., 2622/801.
https://hdl.handle.net/21.15107/rcub_rimsi_2563

Tanasijević G, Ivanović T, Provis JL, Komljenovic M. Leaching resistance of alkali-activated binder contaminated with cesium. in 15th International Congress on the Chemistry of Cement. 2019;:2622/801.
https://hdl.handle.net/21.15107/rcub_rimsi_2563 .

Tanasijević, Gordana, Ivanović, Tijana, Provis, John L., Komljenovic, Miroslav, "Leaching resistance of alkali-activated binder contaminated with cesium" in 15th International Congress on the Chemistry of Cement (2019):2622/801,
https://hdl.handle.net/21.15107/rcub_rimsi_2563 .

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  - CONF
AU  - Nikolić, Violeta
AU  - Komljenović, Miroslav M
AU  - Džunuzović, Nataša
AU  - Ivanović, Tijana
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1187
AB  - This paper investigates the influence of mechanical activation of fly ash on the toxic metals immobilization by fly ash-based geopolymers. Fly ash was firstly mechanically and then alkali-activated. Mechanical activation of fly ash was conducted in a planetary ball mill. Alkali activation of fly ash was carried out at room temperature by use of sodium silicate solution as an activator. Toxic metals (Pb and Cr) were added in the form of water soluble salts during the synthesis of geopolymers. The immobilization process was assessed via investigation of the mechanical and leaching properties of geopolymers. Structural changes of geopolymers during the toxic metals immobilization were assessed by means of gas adsorption and SEM analyses. Mechanical activation of fly ash led to a significant increase in geopolymer strength and to a reduced leaching of toxic metals from geopolymers.
PB  - Trans Tech Publications Ltd
C3  - Key Engineering Materials
T1  - The influence of mechanical activation of fly ash on the toxic metals immobilization by fly ash-based geopolymers
EP  - 6
SP  - 3
VL  - 761 KEM
DO  - 10.4028/www.scientific.net/KEM.761.3
ER  - 

@conference{
author = "Nikolić, Violeta and Komljenović, Miroslav M and Džunuzović, Nataša and Ivanović, Tijana",
year = "2018",
abstract = "This paper investigates the influence of mechanical activation of fly ash on the toxic metals immobilization by fly ash-based geopolymers. Fly ash was firstly mechanically and then alkali-activated. Mechanical activation of fly ash was conducted in a planetary ball mill. Alkali activation of fly ash was carried out at room temperature by use of sodium silicate solution as an activator. Toxic metals (Pb and Cr) were added in the form of water soluble salts during the synthesis of geopolymers. The immobilization process was assessed via investigation of the mechanical and leaching properties of geopolymers. Structural changes of geopolymers during the toxic metals immobilization were assessed by means of gas adsorption and SEM analyses. Mechanical activation of fly ash led to a significant increase in geopolymer strength and to a reduced leaching of toxic metals from geopolymers.",
publisher = "Trans Tech Publications Ltd",
journal = "Key Engineering Materials",
title = "The influence of mechanical activation of fly ash on the toxic metals immobilization by fly ash-based geopolymers",
pages = "6-3",
volume = "761 KEM",
doi = "10.4028/www.scientific.net/KEM.761.3"
}

Nikolić, V., Komljenović, M. M., Džunuzović, N.,& Ivanović, T.. (2018). The influence of mechanical activation of fly ash on the toxic metals immobilization by fly ash-based geopolymers. in Key Engineering Materials
Trans Tech Publications Ltd., 761 KEM, 3-6.
https://doi.org/10.4028/www.scientific.net/KEM.761.3

Nikolić V, Komljenović MM, Džunuzović N, Ivanović T. The influence of mechanical activation of fly ash on the toxic metals immobilization by fly ash-based geopolymers. in Key Engineering Materials. 2018;761 KEM:3-6.
doi:10.4028/www.scientific.net/KEM.761.3 .

Nikolić, Violeta, Komljenović, Miroslav M, Džunuzović, Nataša, Ivanović, Tijana, "The influence of mechanical activation of fly ash on the toxic metals immobilization by fly ash-based geopolymers" in Key Engineering Materials, 761 KEM (2018):3-6,
https://doi.org/10.4028/www.scientific.net/KEM.761.3 . .

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  - Džunuzović, Nataša
AU  - Komljenović, Miroslav M
AU  - Nikolić, Violeta
AU  - Ivanović, Tijana
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1043
AB  - Reliable durability testing of alkali-activated binders, which might serve as a basis for the prediction of long-term field performance, is one of the main challenges towards broader commercial applications of AAB. This study investigated the influence of 5% Na2SO4 solution on mechanical and microstructural properties of alkali-activated binder based on fly ash and blast furnace slag (FA-BFS) composite. The influence of Na2SO4 solution was investigated during the period of 180 days and estimated by comparison with the reference samples simultaneously cured in a humid chamber and with the benchmark material CEM II. Strength, leaching (ICP-OES), pH, XRD, ATR-FTIR, and SEM/EDS analyses were performed. The Strength Loss Index was higher than 1 throughout the whole period of testing indicating strength increase during the exposure to sulfate attack rather than the loss of strength. Slower compressive strength development of the samples exposed to the sulfate solution in comparison with the reference samples was also observed. The exposure of alkali-activated binder to the sulfate solution led to a decrease in the Si/Al atomic ratio of binder matrix due to the leaching of Si, causing slower compressive strength development at the same time. The accelerated testing method used confirmed high resistance both of alkali-activated binder based on fly ash-blast furnace slag and CEM II to external sulfate attack and at the same time confirmed its ability to discriminate the resistance of different type of binders to sulfate aggressive environment.
PB  - Elsevier Sci Ltd, Oxford
T2  - Construction and Building Materials
T1  - External sulfate attack on alkali-activated fly ash-blast furnace slag composite
EP  - 747
SP  - 737
VL  - 157
DO  - 10.1016/j.conbuildmat.2017.09.159
ER  - 

@article{
author = "Džunuzović, Nataša and Komljenović, Miroslav M and Nikolić, Violeta and Ivanović, Tijana",
year = "2017",
abstract = "Reliable durability testing of alkali-activated binders, which might serve as a basis for the prediction of long-term field performance, is one of the main challenges towards broader commercial applications of AAB. This study investigated the influence of 5% Na2SO4 solution on mechanical and microstructural properties of alkali-activated binder based on fly ash and blast furnace slag (FA-BFS) composite. The influence of Na2SO4 solution was investigated during the period of 180 days and estimated by comparison with the reference samples simultaneously cured in a humid chamber and with the benchmark material CEM II. Strength, leaching (ICP-OES), pH, XRD, ATR-FTIR, and SEM/EDS analyses were performed. The Strength Loss Index was higher than 1 throughout the whole period of testing indicating strength increase during the exposure to sulfate attack rather than the loss of strength. Slower compressive strength development of the samples exposed to the sulfate solution in comparison with the reference samples was also observed. The exposure of alkali-activated binder to the sulfate solution led to a decrease in the Si/Al atomic ratio of binder matrix due to the leaching of Si, causing slower compressive strength development at the same time. The accelerated testing method used confirmed high resistance both of alkali-activated binder based on fly ash-blast furnace slag and CEM II to external sulfate attack and at the same time confirmed its ability to discriminate the resistance of different type of binders to sulfate aggressive environment.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Construction and Building Materials",
title = "External sulfate attack on alkali-activated fly ash-blast furnace slag composite",
pages = "747-737",
volume = "157",
doi = "10.1016/j.conbuildmat.2017.09.159"
}

Džunuzović, N., Komljenović, M. M., Nikolić, V.,& Ivanović, T.. (2017). External sulfate attack on alkali-activated fly ash-blast furnace slag composite. in Construction and Building Materials
Elsevier Sci Ltd, Oxford., 157, 737-747.
https://doi.org/10.1016/j.conbuildmat.2017.09.159

Džunuzović N, Komljenović MM, Nikolić V, Ivanović T. External sulfate attack on alkali-activated fly ash-blast furnace slag composite. in Construction and Building Materials. 2017;157:737-747.
doi:10.1016/j.conbuildmat.2017.09.159 .

Džunuzović, Nataša, Komljenović, Miroslav M, Nikolić, Violeta, Ivanović, Tijana, "External sulfate attack on alkali-activated fly ash-blast furnace slag composite" in Construction and Building Materials, 157 (2017):737-747,
https://doi.org/10.1016/j.conbuildmat.2017.09.159 . .

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 . .

Džunuzović, N., Komljenović, M. M., Nikolić, V., Petrašinović-Stojkanović, L., Ivanović, T.,& Ršumović, M.. (2016). Tехнолошки поступак добијања алкално активираних композита отпорних на дејство хемијски агресивне средине. in 2016.
https://hdl.handle.net/21.15107/rcub_rimsi_2506

Džunuzović N, Komljenović MM, Nikolić V, Petrašinović-Stojkanović L, Ivanović T, Ršumović M. Tехнолошки поступак добијања алкално активираних композита отпорних на дејство хемијски агресивне средине. in 2016. 2016;.
https://hdl.handle.net/21.15107/rcub_rimsi_2506 .

Džunuzović, Nataša, Komljenović, Miroslav M, Nikolić, Violeta, Petrašinović-Stojkanović, Ljiljana, Ivanović, Tijana, Ršumović, Mihailo, "Tехнолошки поступак добијања алкално активираних композита отпорних на дејство хемијски агресивне средине" in 2016 (2016),
https://hdl.handle.net/21.15107/rcub_rimsi_2506 .