THERMODYNAMICS OF COBALT(I1)-SODIUM EXCHANGE ON MONTMORILLONITE CLAY |
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| Authors: | J. P. SINGHAL RISHI PAL SINGH |
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| Affiliation: | Chemical Laboratories, Faculty of Engineering and Technology, Muslim University, Aligarh, India |
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| Abstract: | An attempt has been made to predict the mechanism of Co(I1)-Na exchange on montmorillonite with the help of thermodynamic parameters derived from the experimental results. The exchange isotherms indicated a preference of Co ions for the clay phase, a fact in accordance with the separation factor. The reaction was accompanied by a decrease in the free energy, enthalpy, and entropy of the system revealing a tighter and more orderly structure of Co ions on the montmorillonite surface. |
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