Crosslinked Carboxymethyl Modified Starch for Treatment of Heavy Metals Water by Technique of Chelating-Ultrafiltration
2010 ◽
Vol 113-116
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pp. 877-880
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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.
2021 ◽
Vol 904
(1)
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pp. 012009
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2018 ◽
Vol 70
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pp. 11-23
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2014 ◽
Vol 587-589
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pp. 692-695
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2018 ◽
Vol 77
(10)
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pp. 2355-2368
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Keyword(s):
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2022 ◽
Keyword(s):
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2016 ◽
Vol 697
◽
pp. 766-770
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