Removal of Cesium from Aqueous Solution Using PAN-Based Ferrocyanide Composite Spheres: Adsorption on a Fixed-Bed Column

Zhi Hui Du; Ming Chun Jia; Jin Feng Men

doi:10.4028/www.scientific.net/AMM.496-500.259

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 496-500Removal of Cesium from Aqueous Solution Using...

Removal of Cesium from Aqueous Solution Using PAN-Based Ferrocyanide Composite Spheres: Adsorption on a Fixed-Bed Column

Abstract:

Two spherical composite adsorbents namely polyacrylonitrilepotassium cobalt hexacyanoferrates (PAN-KCoCF) and polyacrylonitrilepotassium nickel hexacyanoferrates (PAN-KNiCF) were synthesized. The effects of liquid flow rate, bed height and presence of other cations on the adsorption of cesium were investigated by conducting fixed-bed columns. The results showed that the column performed well at lowest flow rate for PAN-KNiCF. Flow rate examined had little influence on the adsorption of PAN-KCoCF. The breakthrough time decreased with decreasing bed height for both PAN-KCoCF and PAN-KNiCF. In addition, the existence of K⁺, Na⁺, NH₄⁺, Ca²⁺ and Mg²⁺ in solution caused a reduction of maximum adsorption capacity for both of the composites. The bed depth service time (BDST) model and the Thomas model were used to analyze the experimental data and the model parameters were evaluated. Good agreement of the experimental breakthrough curves with the model predictions was observed.

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Applied Mechanics and Materials (Volumes 496-500)

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259-263

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https://doi.org/10.4028/www.scientific.net/AMM.496-500.259

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Online since:

January 2014

Authors:

Zhi Hui Du, Ming Chun Jia, Jin Feng Men

Keywords:

BDST Model, Cesium, Ferrocyanide, Fixed-Bed Adsorption, Polyacrylonitrile, Thomas Model

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