Crosslinked carboxymethyl modified starch for treatment of heavy metals water by technique of chelating-ultrafiltration

摘要：

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.

关键词： Crosslinked carboxymethyl modified starch heavy metal chelating-ultrafiltration

作者: Ting Wang Ye Song Bin Li Xiaoguang Zhou

作者单位: Department of Chemistry,Northeast Forestry University,Harbin 150040,People Republic of China

会议类型: 国际会议

会议名称: 2010 International Conference of Environment Materials and Environment Management(2010年环境材料与环境管理国际学术会议 EMEM 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 877-880

在线出版日期: 2010-07-24（万方平台首次上网日期，不代表论文的发表时间）