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Fe(Ⅱ)/铁氧化物表面结合铁系统还原有机污染物的研究进展
引用本文:李 俊,谢 丽,盛 杰,栾富波,周 琪.Fe(Ⅱ)/铁氧化物表面结合铁系统还原有机污染物的研究进展[J].地球科学进展,2009,24(1):25-32.
作者姓名:李 俊  谢 丽  盛 杰  栾富波  周 琪
作者单位:同济大学污染控制与资源化研究国家重点实验室,上海 200092
摘    要:在土壤和沉积物的自然厌氧环境中,铁氧化物可被铁还原菌等微生物异化还原产生Fe(Ⅱ),形成的Fe(Ⅱ)/铁氧化物表面结合铁系统具有还原活性,可使有机污染物还原转化。综述了含卤和含硝基有机污染物的非生物还原转化过程和表面结合铁系统与有机污染物之间的界面反应机理,进而揭示了污染物在环境中的赋存状态和迁移转化规律;重点分析了影响该还原过程的因素,如铁氧化物类型、pH值、Fe(Ⅱ)与铁氧化物接触时间,以及过渡金属、腐殖酸等竞争因子对反应过程的影响。强化自然界中天然的Fe(Ⅱ)/铁氧化物表面结合铁系统在有机污染治理中的作用,在受污染环境修复领域具有广阔的应用前景。 HT5H]关 键 词:HT5K]

关 键 词:表面结合铁  Fe(Ⅱ)  铁氧化物  非生物还原  有机污染物
收稿时间:2008-09-20
修稿时间:2008-11-30

Reductive Transformation of Organic Pollutants by Surface Bound Fe(Ⅱ) Systems:A Review
LI Jun,XIE Li,SHENG Jie,LUAN Fubo,ZHOU Qi.Reductive Transformation of Organic Pollutants by Surface Bound Fe(Ⅱ) Systems:A Review[J].Advance in Earth Sciences,2009,24(1):25-32.
Authors:LI Jun  XIE Li  SHENG Jie  LUAN Fubo  ZHOU Qi
Institution:State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
Abstract: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.
Keywords:Surface bound iron  Fe(Ⅱ)  Iron oxide  Abiotic reduction  Organic pollutants  
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