Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 374, Issue -, Pages 325-330Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2012.02.001
Keywords
Magnetic fluids; Fixed bed; Extraction; Heavy metal ions; High gradient magnetic separation
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Funding
- State Major Basic Research Development Program of PR China [2007CB613507]
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The focus of this paper was a novel model of Cr(VI) extraction process. The original so-called magnetic-fluids fixed bed (MFFB), which bridged the solvent extraction and the fixed-bed extraction by the theory of the high gradient magnetic separation (HGMS), has been explained. The MFFB integrated the advantages of the two above mentioned classical extraction methods and overcame their drawbacks. The feasibility of this method was studied by extraction experiments of Cr(VI) from aqueous solution. The influences of the design of ferromagnetic steel wires in magnetic separation column, the pH value of feed solution, TBP concentration in magnetic fluids, and flow rate of aqueous solution in column were investigated. Under the optimum conditions, the proposed method obtained high extraction efficiency with continuous process. (C) 2012 Elsevier Inc. All rights reserved.
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