摘要
结合氯代有机物的零价铁脱氯降解研究进展,综述了国内外在零价铁脱氯降解有机氯农药领域的研究情况,大多研究表明零价铁降解有机氯农药的反应符合准一级反应动力学方程,普遍认同氢解反应机理但尚有争议,研究降解过程需考虑溶液pH值和铁表面活性作用的影响,尤其是铁表面的吸附作用不可忽略。最后提出了该技术存在的一些值得思考的问题,探讨了该研究领域的发展前景。
The applications of zero-valent iron in the reductive degradation of organic chlorine pesticide, such as HCH , DDT and hexachlorobenzene （HCB）, linking the study on reductive dechlorination of chlorinated hydrocarbon and chlorinated aro- matic hydrocarbon including polychlorinated biphenyl（PCBs） by zero-valent iron are reviewed in this paper. The results of most studies showed the kinetic behaviors of reductive degradation of organic chlorine pesticide by zero-valent iron are following first --order kinetics equations, the mechanismes of dechlorination reaction are hydrogenolysis that is disputed, and the studies of reductive degradation need to calculate the effectes of pH value of solutiones and the surface activities of zero-valent iron, especially the adsorption on surface of zero-valent iron. Some valuable issues and trend about this technology are also discussed in this paper.
出处
《地质灾害与环境保护》
2008年第2期109-112,共4页
Journal of Geological Hazards and Environment Preservation
基金
国家自然科学基金(40472122)
湖北省重大科技攻关项目(2006AA305A01)--城镇污水深度处理关键技术及示范研究
关键词
零价铁
有机氯农药
还原脱氯
zero-valent iron
Organic chlorine pesticide （OCPs）
reductive dechlorination
