活性炭联合植物修复对水中铬的去除效果研究  

Removal of Cr from Water by Using Activated Carbon Combined with Phytoremediation Technology

作　　者：张之浩[1,2] 李威 ZHANG Zhi-hao;LI Wei(Changsha Environmental Protection College,Changsha 410004,Hunan,China;School of Life Science and Technology,Central South University of Forestry and Technology,Changsha 410004,Hunan,China)

机构地区：[1]长沙环境保护职业技术学院,湖南长沙410004 [2]中南林业科技大学生命科学与技术学院,湖南长沙410004

出　　处：《矿冶工程》2021年第4期113-116,共4页Mining and Metallurgical Engineering

基　　金：湖南省自然科学基金(2019JJ70012)。

摘　　要：采用活性炭吸附、植物(李氏禾)修复、活性炭联合植物修复3种方式对溶液中铬进行去除,考察了溶液铬初始浓度、活性炭添加量、李氏禾添加量及反应时间对铬去除效果的影响。结果表明,活性炭联合植物修复技术可高效去除溶液中铬,除铬效果明显优于单独使用活性炭吸附或植物修复;溶液Cr初始浓度5 mg/L、活性炭添加量150 mg/L、李氏禾加入量10 g/L、反应时间120 h条件下,铬去除率达到95%。活性炭联合植物修复处理含铬废水,简单高效,具有较好推广前景。Experiments on Cr removal from solution were carried out by three methods:activated carbon(AC)adsorption,phytoremediation(with Leersia hexandra),and a combination of those two processes.The effects of an initial concentration of Cr in solution,addition amount of AC and Leersia hexandra,and reaction time on the Cr removal effect were investigated.The results show that the combined process of AC adsorption and phytoremediation technology could effectively remove Cr in solution,with the Cr removal effect significantly better than that by just using single process.With an initial concentration of Cr at 5 mg/L,the addition of AC at an amount of 150 mg/L and the addition of Leersia hexandra at an amount of 10 g/L,the Cr removal rate reached 95%after the adsorption process reached equilibrium in 120 h.It is concluded that this combined process being simple and efficient,can have a good prospect of popularization.

关 键 词：铬 活性炭 李氏禾 植物修复 吸附 除铬 

分 类 号：X703[环境科学与工程—环境工程]