固定化纳米铁修复水环境的研究进展

The Research Progress of Immobilized Nanoscale Zero-valent Iron for Water Environmental Remediation

纳米铁用于修复水环境近年来得到了广泛研究。由于纳米铁粒子小、易团聚而导致工程应用的困难,提高纳米铁的分散度而固定在载体上是一种有效的方法,并且是纳米铁在水环境修复技术应用领域的前沿研究亮点。对近几年铁纳米固定化材料在环境修复领域的研究概况进行了综述。主要探讨了无机矿物(黏土、硅石、活性炭和石墨)以及有机高分子材料(淀粉、纤维素、树脂、壳聚糖、瓜尔胶等)为载体固定纳米铁,以及这些材料在水环境修复中的应用,并展望了固定化纳米铁修复材料的发展前景。

The application of nanoscale zero-valent iron（nZVI） in water environmental remediation has been widely studied.However,the small particle and easy conglobation of nZVI result in the difficulties in engineering application.And it is an effective method to increase nZVI＇s dispersion degree and immobilize it on the supporter,which is a bright spot of the front research on the application of nZVI in water environmental remediation.This paper reviews the recent years＇ researches on nZVI immobilized materials in the field of water environmental remediation,and mainly probes into that both inorganic minerals（such as silica,active carbon and graphite） and organic high molecular materials（such as starch,cellulose,resin,chitosan and guar gum,etc） are used as the carriers to support nZVI,and probes into their application in water environmental remediation,and looks forward to the development prospect of immobilized nZVI for water environmental remediation.