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

Abstract

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.

Studies of Uni-Univalent Ion Exchange Reactions Using Strongly Acidic Cation Exchange Resin Amberlite IR-120

“…For present investigation, the resin grains of 30-40 mesh size were used. The conditioning of the resins was done by usual methods [23][24][25][26]. The ion exchange resins in H + form weighing 0.500g were equilibrated with Na + ion solution of different concentrations at a constant temperature of 30.0℃ for 3 h. From the results of kinetics study reported earlier [30][31][32][33][34][35][36][37][38][39][40][41]; it was observed that this duration was adequate to attain the ion exchange equilibrium.…”

“…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 anion exchange systems [10,[22][23][24][25][26][27][28][29] for computing the thermodynamic equilibrium constants. However, very little work was carried out to study the equilibrium of cation exchange systems [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Study of Uni-Univalent H⁺/K⁺ and Uni-Bivalent H⁺/Mg²⁺ Ion Exchange Reactions Using Nuclear Grade Resin Indion-223

“…Attempts were also made to study the temperature effect on anion exchange systems [65][66][67][68][69][70][71][72][73] for computing the thermodynamic equilibrium constants. However very little work was carried out to study the equilibrium of cation exchange systems [50][51][52][53][54][55][56][57][58][59][60][61][62][63][64]. Therefore, in the present investigation, attempts were made to understand the thermodynamics of uni-univalent and uni-bivalent ion exchange reactions using the nuclear grade cation exchange resin Indion-223.…”

Study on Preferential Selectivity of Nuclear Grade Resin Indion-223 towards some Bivalent Ions

“…A number of researchers carried out equilibrium studies, extending over a wide range of composition of solution and resin phase [38][39][40][41]. Attempts were also made to study the temperature effect on anion exchange systems [38][39][40][41][100][101][102][103][104][105][106][107][108][109][110][111] for computing the thermodynamic equilibrium constants. However very little work was carried out to study the equilibrium of cation exchange systems [85][86][87][88][89][90][91][92][93][94][95][96][97][98][99].…”