Multicomponent ion-exchange equilibria in chabazite zeolite

Conference · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.1021/bk-1991-0468.ch008· OSTI ID:6988324

Robinson, S M; Arnold, W D; Byers, C H

Efficient design ion-exchange columns, using Ionsiv IE-96 chabazite zeolite, for the decontamination of process wastewater that contains ppB levels of Sr-90 and Cs-137 requires a detailed study of binary and multicomponent ion-exchange equilibria. Experimental isotherms were acquired for Ca--Na, Mg--Na, Sr--Na, Cs--Na, Sr--Cs--Na, Ca--Mg--Na, Sr--Ca--Mg--Na, Cs--Ca--Mg--Na, and Sr--Cs--Ca--Mg--Na comparing batch and column experimental approaches. Binary isotherms obtained by the batch technique were most successfully fitted with a modification of the Dubinin-Polyani equilibrium model. Prediction of the multicomponent equilibria from binary data will require more sophisticated modeling. 15 refs., 5 figs., 3 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6988324
• Report Number(s): CONF-9006139-1; ON: DE90010703
• Country of Publication: United States
• Language: English

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