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

Ting Wang; Ye Song; Bin Li; Xiao Guang Zhou

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

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 113-116Crosslinked Carboxymethyl Modified Starch for...

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

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 113-116)

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877-880

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.113-116.877

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Online since:

June 2010

Authors:

Ting Wang, Ye Song, Bin Li, Xiao Guang Zhou

Keywords:

Chelating Ultrafiltration, Crosslinked Carboxymethyl Modified Starch, Heavy Metal

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