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Determination of the NH4+-Na+, Ag+-Na+, and Ca+-Ag+ Ion-Exchange Isotherms in Zeolite A

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Title:Determination of the NH4+-Na+, Ag+-Na+, and Ca+-Ag+ Ion-Exchange Isotherms in Zeolite A
Authors:Lin, Gloria
Contributors:Chemistry (department)
Date Issued:15 Jan 2014
Publisher:University of Hawaii at Manoa
Abstract:The NH4+-Na+, Ag+-Na+, and Ca+-Ag+ ion-exchange isotherms in zeolite A have been determined. Ion exchange was done using aqueous solutions 0.1M in total concentration, and analyses were done by flame emission sectroscopy. The Nh4+-Na+ isotherm displays selectivity for entering NH4+ ions at low NH4+ mole fractions in solution, but this is reversed at high NH4+ mole fractions. The Ag+-Na+ isotherm clearly shows that zeolite A greatly prefers Ag+ over Na+ at all Ng+ mole fractions in solution, and its shape agrees well with that obtained by Sherry and Walton. The Ca+-Ag+ isotherm, differs by a scale factor from that determined by cystallographically.
Pages/Duration:iv, 48 pages
Rights:All UHM Honors Projects are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections: Honors Projects for Chemistry

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