Selectivity study of strongly acidic cation exchange resin Amberlite IR-120 |
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Authors: | P U Singare R S Lokhande N G Samant M R Dhatrak |
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Institution: | 1.Department of Chemistry,Bhavan’s College,Andheri, Mumbai-58,India;2.Department of Chemistry,University of Mumbai, Vidyanagari,Santacruz, Mumbai-98,India;3.Department of Chemistry,Sathaye College,Vile Parle, Mumbai-57,India;4.Department of Chemistry,N.G. Acharya & D.K. Marathe College,Chembur, Mumbai-71,India |
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Abstract: | The thermodynamic measurements was carried out to study the selectivity of cation exchange resin Amberlite IR-120 in protonated
form with respect to Mg2+, Ca2+, Sr2+ and Ba2+ ions in solution. The equilibrium constant K was calculated using the activity coefficients of ions in solution as well as in the resin. The K values calculated for the reacting systems increase with temperature that suggests the endothermic exchange reactions with
estimated enthalpy values of 38.8, 20.6, 8.45, and 7.24 kJ mol−1, respectively. On the basis of calculated parameters, the selectivity of ion exchange resin with respect to various bivalent
ions in the solution was predicted. The method used in our experimental work provides a basis for characterization of ion
exchange resins, which can be promising materials for efficient separation of ions from industrial waste effluents. |
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