Simultaneous Removal of Cd and Cr(VI) Using Fe-Loaded Zeolite
Publication: Journal of Environmental Engineering
Volume 132, Issue 4
Abstract
Current research focuses on the simultaneous removal of Cd and Cr(VI) in water by a newly developed material having both abilities of sorption and electrochemical reduction. The material was derived from the zeolite modified by Fe(II) chloride followed by sodium borohydride reduction. The Fe-loaded zeolite simultaneously removed Cd and Cr(VI) to below the detection limit at a fairly rapid rate within for Cd and within for Cr(VI), under the pH ranging from slightly acid to around neutral. At high concentration of coexisting Cr(VI), the removal efficiency of Fe-loaded zeolite for Cd slightly decreased due to surface fouling by Cr(III) hydroxide precipitations. On the contrary, the coexisting Cd was found to increase the removal rate of Cr(VI) by Fe-loaded zeolite. From the test results, the Fe-loaded zeolite was found to be a possible alternative in simultaneous removal of Cd and Cr(VI) in the aqueous phase.
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Acknowledgment
This work was supported by Grant No. UNSPECIFIEDR-2002-B-257 from the Korean Electrical Engineering & Science Research Institute.
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Information
Published In
Journal of Environmental Engineering
Volume 132 • Issue 4 • April 2006
Pages: 445 - 450
Copyright
© 2006 ASCE.
History
Received: Sep 2, 2004
Accepted: Jun 15, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
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