Thermodynamic characteristics of sorption of metal-ions by ion exchangers | Vestnik Tomskogo gosudarstvennogo universiteta. Chimia – Tomsk State University Journal of Chemistry. 2016. № 1(3).

Thermodynamic characteristics of sorption of metal-ions by ion exchangers

Conditions of sorption equilibrium of copper, zinc, cadmium and lead-ions by chelatforming resins Diaion CR 11, Dowex M 4195 and Duolite C 467 depending on the degree of neutralization of their ionogenic groups, the acidity of the medium and concentration of solutions are studied; corresponding equations expressing the isotherms of sorption are offered. Kinetics of these processes is studied; on the basis of equilibrium and kinetic parameters are calculated thermodynamic quantities. It is shown that under selected conditions the selectivity is controlled by enthalpy factor with calorification and a decrease in entropy.

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Keywords

ионообменные смолы, изотермы сорбции, уравнения изотерм, кинетические и термодинамические величины, ion exchanger resins, sorption isotherms, isotherm equations, kinetic and thermodynamic quantities

Authors

Name	Organization	E-mail
Abbasov Aliaddin Dayyan	Institute Natural Recourses of Nakhchivan section of National Academy of Sciences of Azerbaijan	ada.nat.res@mail.ru
Jafarli Mahnur Moysun	Institute Natural Recourses of Nakhchivan section of National Academy of Sciences of Azerbaijan	nes.az.nil@mail.ru
Memmedova Fizza Sadikh	Institute Natural Recourses of Nakhchivan section of National Academy of Sciences of Azerbaijan	ada.nat.res@mail.ru
Heyderova Farah Farman	Institute Natural Recourses of Nakhchivan section of National Academy of Sciences of Azerbaijan	ada.nat.res@mail.ru

Всего: 4

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