化工环保2012，Vol.32Issue(6)：569-572,4.
重金属螯合剂的制备及镀铬废水中Cr3+的去除
Preparation of Heavy Metal Chelating Agent and Removal of Cr3+ from Cr-plating Wastewater
刘存海 1韩利萍 1刘刚1
作者信息
- 1. 陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室,陕西西安710021
- 折叠
摘要
Abstract
Heavy metal chelating agent(HMCA) was synthesized using diethylenetriamine(DETA), CS2, epichlorohydrin and NaOH as raw materials, and was characterized by FTIR. The morphology and composition of the chelate product were investigated by SEM and electron spectroscopy. The FTIR spectrum indicates that the -CSS- group has been linked with the HMCA molecule successfully. When HMCA is used in the treatment of chromium-plating wastewater, it can form a stable chelate product with Cr3+. The results of electron spectroscopy analysis show that the mole ratio of S to Cr in the chelate product is 4.097 : 1, which is close to the theoretical value, and the formation of the chelate product is according to n(-CSS-) : n(Cr+)= 2:1. Under the optimum conditions of pH 8.5 and HMCA dosage 8.52 g/L, the Cr3+ removal rate is 99.94% of and the residual Cr3+ mass concentration is 0.16 mg/L.关键词
重金属螯合剂/镀铬废水/废水处理Key words
heavy metal chelating agent/ chromium-plating wastewater/ wastewater treatment分类
资源环境引用本文复制引用
刘存海,韩利萍,刘刚..重金属螯合剂的制备及镀铬废水中Cr3+的去除[J].化工环保,2012,32(6):569-572,4.
