Iranian clinoptilolite-rich tuffs for radionuclide removal from water |
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| Authors: | H Faghihian H Kazemian M Ghannadi Maragheh |
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| Institution: | (1) Department of Chemistry, University of Isfahan, Iran;(2) Atomic Energy Organization of Iran, Tehran, Iran |
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| Abstract: | Three Iranian natural zeolites were characterized and evaluated for their abilities to take up Ba+2, Ca+2, K+ and Na+ from radioactive waste waters. The distribution coefficient values (K
d
) of the cations were measured and investigated as a function of pH. Four different cationic forms (Na, K, NH4, and Ca) were also prepared and theirK
d
values were determined. Some cations such as potassium presented highK
d
values both in natural and exchanged zeolites. In sodium and ammonium exchanged forms theK
d
values increased between 7 to 100 times with respect to the untreated zeolite. |
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| Keywords: | |
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