活性炭负载纳米零价铁去除水中高氯酸盐研究  

Removal of Perchlorate from Water using Nanoscale Zero-valent Iron Supported on Activated Carbon

作　　者：何勇[1] 徐春燕[1] 肖爱红[1] 唐敏康[1] 陈瑛[1] 高乃云[2] 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]同济大学环境科学与工程学院,上海200092

出　　处：《资源开发与市场》2016年第7期858-862,F0002,共6页Resource Development & Market

基　　金：国家自然科学基金项目(编号:51064008)

摘　　要：如何有效去除水中高氯酸盐,解决普通零价铁去除效果不佳和易被氧化等缺点是本研究的主要出发点。采用浸润法制备活性炭负载纳米零价铁复合材料,运用扫描电镜对复合材料进行表征,考察了不同条件下复合材料对高氯酸盐的去除效果,并分析了去除机理。研究结果表明:高氯酸盐去除效果在一定范围内随着材料含铁量的增加而升高;高氯酸盐去除效果与其初始浓度呈负相关;pH=5时,去除效果最好;共存阴离子对去除效果具有一定抑制作用;溶液中高氯酸根最终被复合材料(nZVI-GAC)还原成无毒Cl-。How to effectively remove perchlorate in water,soving common zero-valent iron removal of the poor and vulnerable were oxidized was the starting point of this study. Nanoscale zero-valent iron supported on activated carbon（ nZVI / GAC） was synthesized in infiltration method,the nZVI / GAC were characterized through scanning electron microscope（ SEM）. The effect of different pH and initial ClO_4^-concentration adsorbed. The removal effect of perchlorate with composite material under different condition was assessed,and the removal mechanisms was discussed. The results showed that within a certain range,perchlorate removal would be improved with the iron content increased. The removal rate decreasing with initial concentration increasing. The best removal efficiency when pH = 5,Coexistence of anion had negative effect for perchlorate removal. At last,the ClO_4^-was reduced to innocuous Cl^-with nZVI-GAC

关 键 词：活性炭 复合材料 高氯酸盐 吸附 

分 类 号：X703[环境科学与工程—环境工程] TQ03[化学工程]