Crosslinked Carboxymethyl Modified Starch for Treatment of Heavy Metals Water by Technique of Chelating-Ultrafiltration

Abstract:

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Crosslinked carboxymethyl modified starch (CCMS) was prepared by chemical modification of nature cornstarch. This modified degradable polymer had turned out to be a strong ability to chelate heavy metal ions. Using the instrument of microwave plasma torch atomic emission spectrometer(MPT-AES), 20.00 mg/L of Cu, Zn, Ni, Pb, Cd were detected under the Sewage Discharge Standards requirements after adding 90, 154, 86, 70, 546mg/L of CCMS respectively. The separation of the heavy metal ions and CCMS solutions were used the technique of ultrafiltration, with a molecular weight cut-off (MWCO) of 50000. By the same treatment, the chelating sequence of the heavy metals were also measured and decreased in the order of Pb>Cu>Cd>Zn>Ni.

Info:

Periodical:

Advanced Materials Research (Volumes 113-116)

Edited by:

Zhenyu Du and X.B Sun

Pages:

877-880

DOI:

10.4028/www.scientific.net/AMR.113-116.877

Citation:

T. Wang et al., "Crosslinked Carboxymethyl Modified Starch for Treatment of Heavy Metals Water by Technique of Chelating-Ultrafiltration", Advanced Materials Research, Vols. 113-116, pp. 877-880, 2010

Online since:

June 2010

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Price:

$35.00

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