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Received February 2, 2004
Accepted May 8, 2004
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Ion Exchange of Cs Ion in Acid Solution with Potassium Cobalt Hexacyanoferrate
Korea Atomic Energy Research Institute, P.O. Box 105 Yuseong, Daejeon 305-600, Korea 1Yonsei University, Shinchon-Dong, Seodaemun-Gu, Seoul 120-749, Korea
njkmoon@kaeri.re.kr
Korean Journal of Chemical Engineering, September 2004, 21(5), 1026-1031(6), 10.1007/BF02705588
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Abstract
Potassium cobalt hexacyanoferrate (KCoFC) was synthesized for removal of Cs ions in acid waste solution. The synthesized KCoFC was stable in nitric acid solution of pH=1 and showed high selectivity for Cs ion over Sr and Na ions. The Kd,csfor 0.01 N Cs ion solution at pH=2 was about 3.6X103mL/g in the presence of the same concentrations of Sr and Na ions, respectively. In the binary ion exchange system, both the Dubinin-Polanyi model Langmuir model. However, in the multi-component system, only the modified Dubinin-Polanyi model, which is a semiempirical equation, fit the experimental data accurately. The ion exchange capacity of KCoFC for Cs ion obtained by the Dubinin-Polanyi equation was 1.72 meq/g
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Mimura H, Kobayashi T, Akiba K, J. of Nuclear Science and Techonology, 32(1), 60 (1995)
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Moon JK, Kim HT, Shul YG, Lee EH, Yoo JH, HWAHAK KONGHAK, 38(6), 847 (2000)
Moon JK, Jung CH, Lee EH, Kim HT, Shul YG, Korean J. Chem. Eng., 19(5), 838 (2002)
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Sinha PK, Panicker PK, Amalraj RV, Krishnasamy V, Waste Manage., 15(2), 149 (1995)
