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厌氧和好氧条件下土壤中六氯乙烷降解的动态研究 被引量:1

Degradation of Hexachloroethane in Soil under Anaerobic and Aerobic Conditions
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摘要 通过在实验室模拟不同的环境条件,研究常用有机氯化合物——六氯乙烷(Hexachloroethane,HcE)在好氧和厌氧环境条件中的土壤生物降解动态及其影响因素。结果表明,HCE在水稻土中的降解遵循一级反应动力学方程。相对于好氧条件,厌氧条件下土壤微生物对HCE的降解影响较大。在厌氧条件下,在30-60mg/kg的浓度范围内,HCE的降解随土壤中HCE起始浓度增加而加快,当浓度≥60mg/kg时,随HCE起始浓度增加而减慢。而在好氧条件下,HCE的降解速率变化较小,表明相对于好氧条件,厌氧条件下土壤微生物可以利用HCE生长,在未达到其毒性耐受浓度时,HCE降解速率随着其浓度的增加而提高,但当浓度超过微生物的耐受极限浓度时,微生物活动将受到抑制,HCE的降解速率呈下降趋势。 Lab-scale experiments were conducted to simulate degradation of hexachloroethane (HCE) in soil under aerobic and anaerobic conditions. The results showed that degradation of HCE in soil followed the first-order kinetic equation, and under anaerobic condition, compared with aerobic condition, the presence of microorganisms mainly affected the degradation. It was concluded that microorganisms under anaerobic condition were able to grow fast by degrading HCE, and thus degradation of HCE accelerated with the increased initia/HCE concentrations; however, the degradation rate would decline when the initial concentration of HCE reached the maximum tolerable dose.
出处 《环境科学与技术》 CAS CSCD 北大核心 2013年第2期70-74,85,共6页 Environmental Science & Technology
基金 国家自然科学基金青年科学基金项目(21107023) 中国博士后科学基金资助项目(20110491001) 浙江省自然科学基金项目(Y307025) 河南省教育厅自然科学基金项目(2010B610007)
关键词 土壤 六氯乙烷 降解 soil hexachloroethane(HCE) degradation
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  • 1马骁轩,冉勇.珠江三角洲土壤中的有机氯农药的分布特征[J].生态环境学报,2009,18(1):134-137. 被引量:25
  • 2郭子武,陈双林,李迎春,杨清平.有机氯农药生物修复菌剂对雷竹生长及土壤化学性状的影响[J].农业环境科学学报,2010,29(7):1290-1295. 被引量:3
  • 3Martin Wright,Michael J Honeychurch,Allen H O Hill.Bioelectrochemical dehalogenations via direct electro-chemistry of poly(ethylene-oxide)-modified myoglobin[J].Electrochemistry Communications,1999(1):609-613. 被引量:1
  • 4US Environmental Protection Agency.1,1,1-Trichloroethane-ATSDR Public Health Statement[M].Agency for ToxicSubstances and Disease Registry,1990. 被引量:1
  • 5Special Bulletin EDB.Dangerous Properties of IndustrialMaterials Report[R].Van Nostrand Reinhold Co,1984(3):1-31. 被引量:1
  • 6Hoon Y Jeong,Kim F Hayes.Impact of transition metalson reductive dechlorination rate of hexachloroethane bymackinawite[J].Environment Science and Technology,2003,37:4650-4655. 被引量:1
  • 7Christopher S Mazur,Jack Jones W.Hydrogen concentra-tions in sulfate-reducing estuarine sediments during PCEdehalogenation[J].Environment Science and Technology,2001,35:4783-4788. 被引量:1
  • 8Yoshida M,Lee B D,Hosomi M.Decomposition of aque-ous tetrachloroethylene by Fenton oxidation treatment[J].Water Science and Technology,2000,42:203-208. 被引量:1
  • 9Aulenta F,Majone M,Verbo P,et al.Complete dechlorina-tion of tetrachloroethene to ethene in presence of methano-genesis and acetogenesis by an anaerobic sediment micro-cosm[J].Biodegradation,2002,13:411-424. 被引量:1
  • 10Pankow J F,Cherry J A.Dense Chlorinated Solvents andOther DNAPLs in Groundwater:History,Behavior and Re-mediation[M].Portland,OR:Waterloo Press,1996. 被引量:1

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