碳基材料对有机污染物环境行为的影响研究进展
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摘要
碳基材料在材料、环境、能源、电化学等领域广泛应用,对人类生活和经济发展有重要的作用,在环境治理方面,由于其独特的理化性质,它能够有效吸附去除环境中的有机污染物.这些碳基材料中普遍存在大量、稳定的自由基(carbonaceous material free radical,CMFRs),当有机污染物在与碳基材料相互作用时,两者之间除了吸附行为,还存在有机污染物的降解,忽略该过程势必引起对碳基材料功能辨别上的偏差,也导致对有机污染物环境行为描述的不充分.本文综述了有机污染物在碳基材料上的吸附和降解的研究现状,并对系统研究其对有机污染物吸附和降解过程提出了展望.
Carbonaceous materials are widely used in the areas of material science and technology,environmental science and engineering, energy and electrochemistry. These materials play an important role in human life and economic development. In environmental governance,it can effectively adsorb and remove organic pollutants due to its unique physical and chemical properties.The interactions between organic pollutants and carbonaceous materials mainly include adsorption and degradation processes. It has been reported that a great deal of free radicals were detected in these materials( carbonaceous materials free radicals,CMFRs). Degradation reactions occur when organic pollutants interact with the stable free radicals on carbonaceous materials. The overlooked degradation of organic contaminants by carbonaceous materials would not only result in the wrong assignment for their functions,but also an inadequate description for the environmental behavior of organic pollutants. In this paper,the effects of carbonaceous materials on the environmental behavior of organic pollutants were summarized,and the future research directions were suggested.
Carbonaceous materials are widely used in the areas of material science and technology,environmental science and engineering, energy and electrochemistry. These materials play an important role in human life and economic development. In environmental governance,it can effectively adsorb and remove organic pollutants due to its unique physical and chemical properties.The interactions between organic pollutants and carbonaceous materials mainly include adsorption and degradation processes. It has been reported that a great deal of free radicals were detected in these materials( carbonaceous materials free radicals,CMFRs). Degradation reactions occur when organic pollutants interact with the stable free radicals on carbonaceous materials. The overlooked degradation of organic contaminants by carbonaceous materials would not only result in the wrong assignment for their functions,but also an inadequate description for the environmental behavior of organic pollutants. In this paper,the effects of carbonaceous materials on the environmental behavior of organic pollutants were summarized,and the future research directions were suggested.
引文
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[19]CAO X,MA L,GAO B,et al.Dairy-manure derived biochar effectively sorbs lead and atrazine[J].Environmental Science&Technology,2009,43(9):3285-3291.
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[22]XU R K,XIAO S C,YUAN J H,et al.Adsorption of methyl violet from aqueous solutions by the biochars derived from crop residues[J].Bioresource Technology,2011,102(22):10293-10298.
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[24]BORNEMANN L C,KOOKANA R S,WELP G.Differential sorption behaviour of aromatic hydrocarbons on charcoals prepared at different temperatures from grass and wood[J].Chemosphere,2007,67(5):1033-1042.
[25]CHEN Z,CHEN B,CHIOU C T.Fast and slow rates of naphthalene sorption to biochars produced at different temperatures[J].Environmental Science&Technology,2012,46(20):11104-11111.
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[29]王宁,侯艳伟,彭静静,等.生物炭吸附有机污染物的研究进展[J].环境化学,2012,31(3):287-295.WANG N,HOU Y W,PENG J J,et al.Research progess on sorption of orgnic contaminants to biochar[J].Environmental Chemistry,2012,31(3):287-295(in Chinese).
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