基于重金属去除功能的改性淀粉絮凝剂的研究进展  

Research progress of starch modified flocculant based on heavy metal removal function

作　　者：陆曦 刘鉴雯 周晟葆 孙永军 孙文全 李登 徐炎华 LU Xi;LIU Jianwen;ZHOU Shengbao;SUN Yongjun;SUN Wenquan;LI Deng;XU Yanhua(School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 211800,China;College of Urban Construction,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学环境科学与工程学院,江苏南京211800 [2]南京工业大学城市建设学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2021年第5期547-552,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家重点研发计划(2017YFB0602500);江苏省“六大人才高峰”(JNHB038)。

摘　　要：随着越来越多的污染物进入环境,水体中重金属污染问题已引起学者们的关注。絮凝是废水处理工艺的关键环节之一,絮凝剂在絮凝过程起到重要作用。无毒、环保、性能优异的重金属絮凝剂的研发已成为水处理絮凝剂领域关注的热点之一。淀粉改性絮凝剂作为环境友好型、经济良好型、易于降解型天然绿色絮凝剂,在重金属废水处理方面受到广泛的关注。本文综述了重金属污染的来源与危害,系统地阐明了淀粉的物理和化学改性方式,重点介绍了淀粉絮凝剂接枝共聚,交联,醚化和酯化的常用化学修饰方法,和其去除重金属离子的机制。最后还对淀粉改性絮凝剂的发展趋势和研究方向进行了展望。As more and more pollutants enter the environment,the problem of heavy metal pollution in water bodies has attracted the attention of scholars.Flocculation is one of the key links in the wastewater treatment process,and flocculants play an important role in the flocculation process.The research and development of non-toxic,environmentally friendly,and excellent heavy metal flocculants have become one of the hot spots in the field of water treatment flocculants.Starch modified flocculant,as an environment-friendly,economical,and easily degradable natural green flocculant,has received extensive attention in the treatment of heavy metal wastewater.This article reviewed the sources and hazards of heavy metal pollution,systematically clarified the physical and chemical modification methods of starch,and focused on the common chemical modification methods of graft copolymerization,crosslinking,etherification and esterification of starch flocculants,and their removal mechanism of heavy metal ions.Finally,the development trend and research direction of starch modified flocculants are prospected.

关 键 词：改性淀粉 絮凝剂 絮凝 重金属 去除机制 

分 类 号：X703.1[环境科学与工程—环境工程]