Ion-Exchange Equilibria of Transition Metals and Potassium Ions on an Inorganic Ion-Exchanger: Zirconium(IV) Iodophosphate
| Autor: | S.A. Nabi, A. Islam, N. Rahman |
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| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Adsorption Science & Technology, Vol 17 (1999) |
| Druh dokumentu: | article |
| ISSN: | 0263-6174 2048-4038 02636174 |
| DOI: | 10.1177/026361749901700802 |
| Popis: | The ion-exchange equilibria of various divalent transition metal ion (Co 2+ , Zn 2+ , Cd 2+ and Cu 2+ )/K + systems have been studied over the temperature range 30–60°C on zirconium(IV) iodophosphate (ZIP). The exchange isotherms were constructed by means of a batch technique for M(NO 3 ) 2 /KNO 3 media of 0.01 mol/kg ionic strength, where M = Co 2+ , Zn 2+ , Cd 2+ or Cu 2+ . The selectivity sequence was determined as Co 2+ < Zn 2+ < Cd 2+ < Cu 2+ . Thermodynamic equilibrium constants and values of ΔG 0 , ΔS 0 and ΔH 0 were evaluated for the exchange process. |
| Databáze: | Directory of Open Access Journals |
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