摘要
硫化零价铁(S-ZVI)包括纳米级S-ZVI(S-nZVI)和微米级S-ZVI(S-mZVI),作为零价铁(ZVI)的改性材料,具有更强的反应活性和目标污染物选择性,对水体中重金属和有机污染物有更好的去除及固定化效果,因此受到越来越多研究者的关注。综述了近年来S-ZVI的制备方法、硫化对物理化学特征和反应活性的影响。相对于ZVI,S-ZVI的反应速率和去除效率都有所提高,同时减缓了ZVI与水的反应,增加了对目标污染物的选择性并延长了反应时间,对于水及土壤中的污染物修复具有重要意义。
As the modi ed materials for zero-valent iron(ZVI),sul de-modi ed zero-valent iron(S-ZVI)including sul de-modi ed nanoscale ZVI(S-nZVI)and sul de-modi ed microscale ZVI(S-mZVI)has stronger reactivity and target pollutant selectivity.In addi-tion,it has better removal and immobilization effects on heavy metals and organic pollutants in water.Therefore,there are increasingly number of researchers attaching more importance to S-ZVI.In recent years,the preparation methods of S-ZVI and the effects of sul de-modi ed on physicochemical characteristics and reactivity were reviewed.Compared with ZVI,the reaction rate and removal ef ciency of S-ZVI are improved.At the same time,it slowed down the reaction of ZVI with water.Moreover,S-ZVI showed the higher selectivity at the target pollutants and prolonged the lifespan of ZVI,which was of great signi cance for the remediation of pollutants in water and soil.
作者
李盟
唐宝玲
陈胜文
王利军
LI Meng;TANG Baoling;CHEN Shengwen;WANG Lijun(School of Environmental and Materials Engineering,Shanghai Polytechnic University,Shanghai 201209,China)
出处
《上海第二工业大学学报》
2019年第4期243-255,共13页
Journal of Shanghai Polytechnic University
基金
上海第二工业大学研究生项目基金(EGD19YJ0073)资助
关键词
硫化零价铁
零价铁
制备
表征
综述
sulfide zero-valent iron
zero-valent iron
preparation
characterization
review
