摘要
负载纳米零价铁及其双金属复合材料能高效降解氯代有机物,已成为国内外都颇受关注的研究热点。该文介绍了纳米零价铁在不同负载材料上的负载方法,概述了负载纳米零价铁复合材料降解氯代有机物的研究进展,包括其降解效率、机理及动力学。并讨论了p H等环境因素及零价铁含量、材料老化等内在因素对该吸附与还原脱氯过程所造成的影响。针对当前该领域在材料性能、降解和老化机理方面的不足,提出了研究展望。
Supported nanoscale zero-valent iron （nZVI） and its bimetallic systems have attracted a great deal of research interest due to their high capacity of degrading chlorinated organic compounds. In this paper, the immobilized methods of nZVI on different materials and the research progress of the reaction efficiency were introduced, mechanism and kinetics of COCs degradation by supported nZVI composites were reviewed. The influence of environmental factors, such as pH, and internal factors, such as the content of zero-valent iron and aging process of nZVI, on the adsorption and reductive dechlofination process were also discussed. The research prospect in the aspect of material properties, degradation and aging mechanism in this field was also proposed.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2016年第1期44-52,共9页
Environmental Science & Technology
基金
国家自然科学基金项目资助(41201302)
