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化学进展 2008, Vol. 20 Issue (0203): 233-238 前一篇   后一篇

• 综述与评论 •

汞离子天然吸附剂

李新贵 封皓 黄美荣*   

  1. (同济大学 材料学院 先进土木工程材料教育部重点实验室 材料化学研究所 上海 200092)
  • 收稿日期:2007-03-08 修回日期:2007-04-18 出版日期:2008-03-24 发布日期:2008-03-24
  • 通讯作者: 黄美荣

Natural Sorbents for Mercuric Removal

Li Xingui; Feng Hao; Huang Meirong*   

  1. (Institute of Materials Chemistry, Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education, College of Materials Science and Engineering, Tongji University, Shanghai 200092,China)
  • Received:2007-03-08 Revised:2007-04-18 Online:2008-03-24 Published:2008-03-24
  • Contact: Huang Meirong
汞离子是现代工业中剧毒的污染物之一,研究者致力于汞离子高效吸附剂的研制已有多年。本文基于国内外最新研究文献,系统论述了汞离子天然吸附剂如壳聚糖、矿物、微生物等的吸附性能,并详细比较了各种吸附剂的优缺点,指出天然吸附剂来源广泛、价格便宜,尤其是修饰后的壳聚糖吸附性能甚至可以和一些合成吸附剂相媲美。在所报道的天然吸附剂中,引入巯基后的戊二醛交联壳聚糖,对初始浓度为500mg/L的汞离子的吸附容量可达1604.7mg/g,属已知的汞离子天然吸附剂中之最。天然汞离子吸附剂在工业废水处理中显示出了广阔的应用前景。
Mercury ion is one of the extremely toxic pollutant in modern industry.For many years researchers have been focusing ondevelopment of highly efficient sorbents forfor the removal of mercury ions. The sorption characteristics of natural sorbents for mercuric removal,such as chitosan, clay minerals, microorganism,and their modifications are systematically reviewed in this book based on recent research progress. The advantages and disadvantages of the individual sorbent have also been discussed and compared in detail. It is pointed out that the natural sorbents are readily available with a low cost., and particularly, the sorption capacity of the chemically modified chitosan is even comparable with those of synthetical sorbents. Among the natual sorbents ever reported, the glutaraldehyde-crosslinked chitosan with thiol groups exibits the maximal adsorption capacity of 1604.7mg/g when treating the mercury ions at an initial concentration of 500mg/L. Natural sorbents show a promising application potential for the removal of mercury ions from industrial wastewaters.

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摘要

汞离子天然吸附剂