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Column study of cadmium adsorption onto poly(vinyl alcohol)/hydroxyapatite composite cryogel

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Abstract

Macroporous PVA/HAp composite cryogel was studied for cadmium removal in a fixed-bed column. The cryogel was made through a freeze-thawing process. The morphology of the cryogel was measured. The adsorption performance of the cryogel in the column was examined by varying bed height and HAp amount in PVA cryogel. The maximum adsorption capacity and exhaustion time were determined from the breakthrough curves. The experimental data was described using Adams-Bohart model. Bed height did not exert a large influence on the maximum adsorption capacity and exhaustion time. The kinetic rate constant and the adsorption capacity of the bed were found to be affected by HAp amount.

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Authors and Affiliations

  1. School of Textile Engineering, Dalian Polytechnic Univeristy, Dalian, 116034, China

    Xiao Wang

  2. Department of Nano-Bio Textile Engineering, Kumoh National Institute of Technology, Gumi, 730-701, Korea

    Jung Hwan Kim & Byung Gil Min

Authors
  1. Xiao Wang
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  2. Jung Hwan Kim
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  3. Byung Gil Min
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Correspondence to Byung Gil Min.

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Wang, X., Kim, J.H. & Min, B.G. Column study of cadmium adsorption onto poly(vinyl alcohol)/hydroxyapatite composite cryogel. Fibers Polym 9, 263–266 (2008). https://doi.org/10.1007/s12221-008-0041-1

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  • DOI: https://doi.org/10.1007/s12221-008-0041-1

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