作　　者： ; ; ; ;

机构地区： 广东工业大学轻工化工学院

出　　处： 《水处理技术》 2007年第12期38-41,共4页

摘　　要： 用乙二胺四乙酸二酐(EDTAD)对大豆蛋白进行酰化改性,再用戊二醛交联制得凝胶,研究了凝胶对Pb2+、Zn2+、Cu2+、Ca2+的螯合能力,探讨了离子浓度、温度、pH值和改性程度对凝胶金属螯合能力的影响。凝胶对Ca2+、Zn2+、Pb2+、Cu2+的最大螯合分别为0.71、0.65、0.75、0.58 mmol/g。结果表明,该凝胶具有作为金属螯合剂应用于污水处理中的可能性。 A modified soy protein gel was synthesized by first acylating the soy protein with ethylenedinaminetetraacetic dianhydride（EDTAD）, followed by corsslinking with glutaraldelyde.The chelating capabilities of the Pb^2＋,Zn^2＋,Cu^2＋ and Ca^2＋ by the gel was studied.The effect of metal concentration, temperature, pH and carboxyl group on the chelating capability of gel was observed. The chelating capabilities for the Pb^2＋,Zn^2＋,Cu^2＋and Ca^2＋ by the gel were 0.71, 0.65, 0.75 and 0.58 mmole/g dry gel, respectively. The results indicated the application of modified soy protein gel to the treatment of metal wastewater to be feasible.

关 键 词： 大豆蛋白 凝胶 金属螯合

领　　域： [化学工程] [环境科学与工程]