Effect of the temperature on the thermodynamic characteristics of the ion-exchange separation of substances on ionites

Иванов, В. А.; Горшков, В. И.; Gavlina, O. T.; Ilyukhina, E.

doi:10.1134/s0036024406110264

Cited by 9 publications

(3 citation statements)

References 9 publications

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“…A broad survey of the published literature has shown that many have investigated the effect of temperature on ion exchange equilibria experimentally. − They studied temperature dependence of ion exchange on various types of exchangers and different cations involved. They concluded their findings in terms of the evaluation of thermodynamic properties such as Δ F °, Δ H ° and Δ S °.…”

Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na⁺, K⁺, Ca²⁺ and Mg²⁺ Ions

Rustam

Shallcross

2014

Ind. Eng. Chem. Res.

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The effect of temperature on the ion exchange equilibrium behavior of binary systems is studied experimentally and modeled. The study considers the exchange between binary systems involving Na+, K+, Ca2+ and Mg2+ ions with Cl– as a nonexchanging anion on Rohm and Hass gel-type Amberjet 1200H resin as the ion exchange medium. Experimental equilibrium data is obtained for the six constitutive binary systems at 4.0, 25.0 and 60.0 °C with a total solution concentration of 0.10 N. The nonidealities in the solution and exchanger phases are modeled by applying the Pitzer and Wilson models, respectively. Thermodynamic equilibrium constant and Wilson interaction parameters are modeled with respect to temperature. The model proposed allows the influence of temperature on the ion exchange equilibrium behavior to be predicted well.

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Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na⁺, K⁺, Ca²⁺ and Mg²⁺ Ions

Rustam

Shallcross

2014

Ind. Eng. Chem. Res.

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“…Extensive work was done by previous researchers to study the concentration and temperature effect on ion exchange systems (Heumann and Baier, 1982;Adachi et al, 1989;Shuji et al, 1996) for computing the distribution coefficient values and to study the temperature effect on cation exchange equilibrium (Bonner and Smith, 1957a,b;Muraviev et al, 1998;Ivanov et al, 2006). Ivanov et al (1998) also studied the influence of temperature on ion exchange equilibrium using ionic exchange resins.…”

Section: Introductionmentioning

confidence: 99%

Modification of the AMX membrane surface: Temperature dependence of anion exchange equilibrium

2012

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In order to improve the selectivity of the AMX membrane, a polyethyleneimine (PEI) layer was adsorbed on its surface. Ion exchange isotherms of (Cl−/NO3−), (Cl−/SO42−) and (NO3−/SO42−), using a modified AMX membrane, were established at different temperatures (from 283 to 313 K), with a constant total concentration of 0.3 mol/L and neutral pH. The results obtained with the modified membrane in this range of temperature show that chloride was the most sorbed and the selectivity order was Cl− > NO3− > SO42−. Selectivity coefficients and thermodynamic equilibrium constants, determined for the three binary systems, increased with increasing temperature. These results were compared with those obtained with the unmodified membrane. It was observed that for the modified membrane, the selectivity towards sulphate ion decreased and the modified membrane became more selective towards monovalent anions. Ion exchange equilibrium at temperatures 283, 298 and 313 K of the studied binary systems were found to be endothermic processes.

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“…A number of researchers carried out equilibrium studies , extending over a wide range of composition of solution and resin phase. Attempts were also made to study the temperature effect on cation exchange systems for computing the thermodynamic equilibrium constants [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. However very little work was carried out to study the equilibrium of anion exchange systems [12] and [24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

<b>Thermodynamics of ion exchange equilibrium for some uni-univalent and divalent reaction systems using strongly basic anion exchange resin Indion FF-IP</b>

Singare

Lokhande

Prabhavalkar

2008

Bull. Chem. Soc. Eth.

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The study on thermodynamics of ion exchange equilibrium for uni-univalent Cl-/I-, Cl-/Br-, and uni-divalent Cl-/SO4 2-, Cl-/C2O4 2reaction systems was carried out using ion exchange resin Indion FF-IP. The equilibrium constant K was calculated by taking into account the activity coefficient of ions both in solution as well as in the resin phase. For uni-univalent ion exchange reaction systems, the equilibrium constant K' were also calculated by considering mole fraction of ions in the resin phase. The K values calculated for uni-univalent and uni-divalent anion exchange reaction systems were observed to increase with rise in temperature, indicating the endothermic exchange reactions having enthalpy values of 22.45, 28.57, 17.84, 15.97 kJ/mol, respectively.

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Effect of the temperature on the thermodynamic characteristics of the ion-exchange separation of substances on ionites

Cited by 9 publications

References 9 publications

Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na⁺, K⁺, Ca²⁺ and Mg²⁺ Ions

Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na⁺, K⁺, Ca²⁺ and Mg²⁺ Ions

Modification of the AMX membrane surface: Temperature dependence of anion exchange equilibrium

<b>Thermodynamics of ion exchange equilibrium for some uni-univalent and divalent reaction systems using strongly basic anion exchange resin Indion FF-IP</b>

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Effect of the temperature on the thermodynamic characteristics of the ion-exchange separation of substances on ionites

Cited by 9 publications

References 9 publications

Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na+, K+, Ca2+ and Mg2+ Ions

Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na+, K+, Ca2+ and Mg2+ Ions

Modification of the AMX membrane surface: Temperature dependence of anion exchange equilibrium

<b>Thermodynamics of ion exchange equilibrium for some uni-univalent and divalent reaction systems using strongly basic anion exchange resin Indion FF-IP</b>

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Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na⁺, K⁺, Ca²⁺ and Mg²⁺ Ions

Temperature-Dependent Model for the Prediction of Binary Ion Exchange Equilibria Involving Na⁺, K⁺, Ca²⁺ and Mg²⁺ Ions