Abstract:

PAM has been used as initial raw materials， the heavy metal ions chelating agent PADC are synthesized by a two-step reaction． The structure of the substance is characterized by IR and 1H NMR． The 5 mg/L Pb²⁺ removal capacity of PADC is investigated and the best removal conditions are obtained as follows：stirring time 8 min，pH=4，dosage of PADC=24 mg/L. Under these conditions， the maximum removal rate of Pb²⁺ is 95.4%.

Key words: PADC, chelating agent, removal of lead

摘要：

以聚丙烯酰胺为初始原料,通过两步反应合成了聚一烃基二硫代氨基甲酸钠(PADC)重金属离子螯合剂,用IR、1H NMR对目标物的结构进行了表征,考察了PADC对Pb²⁺的螯合去除能力,得到最佳螯合去除条件为:对5 mg/L的Pb²⁺溶液,搅拌时间8 min,体系pH=4,PADC投加质量浓度为24 mg/L,此时PADC对Pb²⁺的最高去除率达到95.4%。

关键词: 聚一烃基二硫化氨基甲酸钠, 螯合剂, 除铅

CLC Number: 

• TQ085