Advances in Earth Science ›› 2009, Vol. 24 ›› Issue (1): 25-32. doi: 10.11867/j.issn.1001-8166.2009.01.0025

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Reductive Transformation of Organic Pollutants by Surface-Bound Fe(Ⅱ) Systems:A Review

Li Jun,Xie Li,Sheng Jie,Luan Fubo,Zhou Qi   

  1. State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
  • Received:2008-09-20 Revised:2008-11-30 Online:2009-01-10 Published:2009-01-10

Li Jun,Xie Li,Sheng Jie,Luan Fubo,Zhou Qi. Reductive Transformation of Organic Pollutants by Surface-Bound Fe(Ⅱ) Systems:A Review[J]. Advances in Earth Science, 2009, 24(1): 25-32.

Soil and sediments are anoxic and anaerobic environment, often containing high levels of Fe(Ⅱ) due to the interaction of iron reducing bacteria with iron oxide minerals which are widely present in subsurface. The Fe(Ⅱ) associated with iron oxides is highly reactive, and could play an effective role in reducing organic pollutants. This paper reviews the involved interfacial mechanisms, and the abiotic reductive transformation process of halogenated and nitroaromatic compounds occurring on the surface-bound Fe(Ⅱ) system. Impact factors such as active surface sites, pH, types of iron oxide mineral, contact time of Fe(Ⅱ) with iron oxide, metals and humic acid are discussed and evaluated. The natural surface bound Fe(Ⅱ) system is, therefore, likely to play a potential role in reductive in-situ transformation of organic pollutants in subsurface remediation, and this reaction should be enhanced and taken into account in further studies.

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