四氯乙烯在不同地下水环境的生物共代谢降解
Co-metabolism Biodegradation of Tetrachloroethylene under Different Groundwater Conditions
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摘要: 四氯乙烯是地下水中常见的污染物,采用生物方法进行处理的优点是可以实现无害化、无二次污染、处理成本低。四氯乙烯只能在厌氧条件下发生还原脱氯,目前对产甲烷环境下四氯乙烯的降解研究较多,而对较弱还原环境,如反硝化、铁锰还原和硫酸盐还原环境下四氯乙烯的脱氯行为研究甚少。本文采用批实验,研究了在不同地下水环境,包括反硝化、铁还原、硫酸盐还原、混合电子受体和天然地下水环境下四氯乙烯的脱氯性能。结果表明,铁还原环境的四氯乙烯脱氯效果最好,天然地下水环境次之,四氯乙烯的去除率分别达到91.34%和84.71%,四氯乙烯很快转化为三氯乙烯,并可以进一步转化为二氯乙烯,四氯乙烯的降解符合准一级反应动力学方程。在反硝化、硫酸盐还原、混合电子受体环境,四氯乙烯的去除以挥发为主,降解只占很小的比例,且最终的降解产物只有三氯乙烯。地下水中三价铁的存在,对于四氯乙烯脱氯起促进作用;而当地下水中硝酸盐和硫酸盐的浓度较高时,四氯乙烯脱氯受到抑制。Abstract: Tetrachloroethylene (PCE) is one of the most common contaminants in groundwater. The microorganism treatment method has the advantages of low cost and no secondary pollution. PCE can only be biodegraded under reducing conditions, and most research aimed at PCE biodegradation under methanogenic conditions and few under relatively weak reducing conditions, such as denitrifying, iron reducing, sulfate reducing. Trichloroethylene (TCE) biodegradation under different groundwater conditions, including denitrifying, iron reducing, sulfate reducing, mixing electron acceptors and natural groundwater condition, was studied with batch experiments and is described in this paper. The results show that the iron reducing condition is the best condition for PCE biodegradation, followed by natural groundwater condition with PCE removal efficiencies of 91.34% and 84.71% respectively. PCE is transformed to TCE quickly, and to dichlorethane (DCE) eventually. PCE biodegradation is in accordance with the first order kinetic equation. It is difficult to achieve PCE biodegradation in denitrifying, sulfate reducing and mixing electron acceptor conditions, and the degradation product is TCE only, where most PCE is removed by volatilization. PCE biodegradation is promoted by the existence of ferric iron, while it is inhibited by the high concentration of nitrate and sulfate.
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Keywords:
- groundwater /
- tetrachloroethylene /
- biodegradation /
- co-metabolism
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James C A, Xin G, Doty S L, Muiznieks I, Newman L, Strand S E. A mass balance study of the phytore-mediation of perchloroethylene-contaminated groundwater [J]. Environmental Pollution, 2009, 157: 2564-2569. James C A, Xin G, Doty S L, Muiznieks I, Newman L, Strand S E. A mass balance study of the phytore-mediation of perchloroethylene-contaminated groundwater [J]. Environmental Pollution, 2009, 157: 2564-2569.
Ibbini J, Santharam S, Davis L C, Ericson E. Labora-tory and field scale bioremediation of tetrachloroethene (PCE) contaminated groundwater [J].Jordan Journal of Mechanical and Industrial Engineering, 2010, 4(1): 35-44. Ibbini J, Santharam S, Davis L C, Ericson E. Labora-tory and field scale bioremediation of tetrachloroethene (PCE) contaminated groundwater [J].Jordan Journal of Mechanical and Industrial Engineering, 2010, 4(1): 35-44.
崔玉静,张旭红.北京市环境状况的发展趋势及对策[J].北京城市学院学报, 2009(6): 34-41. United States Environmental Protection Agency. EPA 816-F-09-004, National Primary Drinking Water Regulations . 2009. United States Environmental Protection Agency. EPA 816-F-09-004, National Primary Drinking Water Regulations . 2009.
Vilaplana M, Marco- Urrea E, Gabarrell X, Sarr M, Caminal G. Required equilibrium studies for designing a three-phase bioreactor to degrade trichloroethylene (TCE) and tetrachloroethylene (PCE) by Trametes versicolor [J]. Chemical Engineering Journal, 2008, 144: 21-27. Vilaplana M, Marco- Urrea E, Gabarrell X, Sarr M, Caminal G. Required equilibrium studies for designing a three-phase bioreactor to degrade trichloroethylene (TCE) and tetrachloroethylene (PCE) by Trametes versicolor [J]. Chemical Engineering Journal, 2008, 144: 21-27.
Aulenta F, Rossetti S, Majone M, Tandoi V. Detection and quantitative estimation of Dehalococcoides spp. in a dechlo-rinating bioreactor by a combination of fluorescent in situ hybridization (FISH) and kinetic analysis[J]. Applied Microbiology and Biotechnology, 2004, 64: 206-212. Aulenta F, Rossetti S, Majone M, Tandoi V. Detection and quantitative estimation of Dehalococcoides spp. in a dechlo-rinating bioreactor by a combination of fluorescent in situ hybridization (FISH) and kinetic analysis[J]. Applied Microbiology and Biotechnology, 2004, 64: 206-212.
Aulenta F, Potalivo M, Majone M, Papini M P, Tandoi V. Anaerobic bioremediation of groundwater containing a mixture of 1,1,2,2-tetrachloroethane and chloroethenes [J]. Biodegradation, 2006, 17: 193-206. Aulenta F, Potalivo M, Majone M, Papini M P, Tandoi V. Anaerobic bioremediation of groundwater containing a mixture of 1,1,2,2-tetrachloroethane and chloroethenes [J]. Biodegradation, 2006, 17: 193-206.
Bunge M, Kleikemper J, Miniaci C, Due L, Muusse M G, Hause G, Zeyer J. Benzoate-driven dehalogenation of chlorinated ethenes in microbial cultures from a contaminated aquifer[J]. Applied Microbiology and Biotechnology, 2007, 76: 1447-1456. Bunge M, Kleikemper J, Miniaci C, Due L, Muusse M G, Hause G, Zeyer J. Benzoate-driven dehalogenation of chlorinated ethenes in microbial cultures from a contaminated aquifer[J]. Applied Microbiology and Biotechnology, 2007, 76: 1447-1456.
Cabirol N, Jacob F, Perrier J, Fouillet B, Chambon P. Complete degradation of high concentrations of tetrachloroethylene by a methanogenic consortium in a fixed-bed reactor [J]. Journal of Biotechnology, 1998, 62: 133-141. Cabirol N, Jacob F, Perrier J, Fouillet B, Chambon P. Complete degradation of high concentrations of tetrachloroethylene by a methanogenic consortium in a fixed-bed reactor [J]. Journal of Biotechnology, 1998, 62: 133-141.
van Eekert M H, Schrder T J, van Rhee A, Stams A J, Schraa G, Field J A. Constitutive dechlorination of chlorinated ethenes by a methanol degrading methano-genic consortium [J]. Bioresource Technology, 2001, 77(2): 163-170. van Eekert M H, Schrder T J, van Rhee A, Stams A J, Schraa G, Field J A. Constitutive dechlorination of chlorinated ethenes by a methanol degrading methano-genic consortium [J]. Bioresource Technology, 2001, 77(2): 163-170.
Kao C M, Chen Y L, Chen S C, Yeh T Y, Wu W S. Enhanced PCE dechlorination by biobarrier systems under different redox conditions[J]. Water Research, 2003, 37: 4885-4894. Kao C M, Chen Y L, Chen S C, Yeh T Y, Wu W S. Enhanced PCE dechlorination by biobarrier systems under different redox conditions[J]. Water Research, 2003, 37: 4885-4894.
Wang L. Tetrachloroethene (PCE) and Trichloroethene (TCE) Biodegradation with Bioreactors . Mississippi: University of Missouri Columbia, 2001. Wang L. Tetrachloroethene (PCE) and Trichloroethene (TCE) Biodegradation with Bioreactors . Mississippi: University of Missouri Columbia, 2001.
Heimann A C, Friis A K, Jakobsen R. Effects of sulfate on anaerobic chloroethene degradation by an enriched culture under transient and steady-state hydrogen supply [J]. Water Research, 2005, 39: 3579-3586. Heimann A C, Friis A K, Jakobsen R. Effects of sulfate on anaerobic chloroethene degradation by an enriched culture under transient and steady-state hydrogen supply [J]. Water Research, 2005, 39: 3579-3586.
Boopathy, R. Anaerobic biotransformation of carbon tetrarchloride under various electron acceptor conditions [J]. Bioresource Technology, 2002, 84: 69-73. Boopathy, R. Anaerobic biotransformation of carbon tetrarchloride under various electron acceptor conditions [J]. Bioresource Technology, 2002, 84: 69-73.
Lee T H, Yoshimi M, Ike M, Fujita M. Characterization of an anaerobic soil enrichment capable of dechlorinating high concentrations of tetrarchloroetheylene [J]. Water Science and Technology, 1997, 36(6-7): 117-124. Lee T H, Yoshimi M, Ike M, Fujita M. Characterization of an anaerobic soil enrichment capable of dechlorinating high concentrations of tetrarchloroetheylene [J]. Water Science and Technology, 1997, 36(6-7): 117-124.
Holliger C. The anaerobic microbiology and biotreatment of chlorinated ethenes [J]. Environmental Biotechnology, 1995, 6: 347-351. Holliger C. The anaerobic microbiology and biotreatment of chlorinated ethenes [J]. Environmental Biotechnology, 1995, 6: 347-351.
卢晓霞,李广贺,张旭.不同氧化还原条件下氯乙烯的微生物脱氯[J].环境科学, 2002, 23(2): 29-33. Borch T, Ambus P, Laturnus F, Svensmark B, Grn C. Biodegradation of chlorinated solvents in a water unsaturated topsoil [J]. Chemoshpere, 2003, 51: 143-152. Borch T, Ambus P, Laturnus F, Svensmark B, Grn C. Biodegradation of chlorinated solvents in a water unsaturated topsoil [J]. Chemoshpere, 2003, 51: 143-152.
Miller E, Wohlfarth G, Diekert G. Comparative studies on tetrachloroethene reductive dechlorination mediated by Desulfitobacterium sp. strain PCE-S [J]. Archives of Microbiology, 1997, 168: 513-519. Miller E, Wohlfarth G, Diekert G. Comparative studies on tetrachloroethene reductive dechlorination mediated by Desulfitobacterium sp. strain PCE-S [J]. Archives of Microbiology, 1997, 168: 513-519.
Eisenbeis M, Bauer-Kreisel P, Scholz-Muramatsu H. Stu-dies on the dechlorination of tetrachloroethene to cis-1,2-dichloroethene by Dehalospirillum multivorans in biofilms [J]. Water Science and Technology, 1997, 36(1): 191-198. Eisenbeis M, Bauer-Kreisel P, Scholz-Muramatsu H. Stu-dies on the dechlorination of tetrachloroethene to cis-1,2-dichloroethene by Dehalospirillum multivorans in biofilms [J]. Water Science and Technology, 1997, 36(1): 191-198.
Beeman R E, Bleckmann C A. Sequential anaerobic aerobic treatment of an aquifer contaminated by halogenated organics: Field results [J]. Journal of Contaminant Hydrology, 2002, 57: 147-159. Beeman R E, Bleckmann C A. Sequential anaerobic aerobic treatment of an aquifer contaminated by halogenated organics: Field results [J]. Journal of Contaminant Hydrology, 2002, 57: 147-159.
Frascari D, Pinelli D, Nocentini M, Zannoni A, Fedi S, Baleani E, Zannoni D, Farneti A, Battistelli A. Long-term aerobic cometabolism of a chlorinated solvent mixture by vinyl chloride-, methane- and propane-utilizing biomasses [J]. Journal of Hazardous Materials, 2006, 138: 29-39. Frascari D, Pinelli D, Nocentini M, Zannoni A, Fedi S, Baleani E, Zannoni D, Farneti A, Battistelli A. Long-term aerobic cometabolism of a chlorinated solvent mixture by vinyl chloride-, methane- and propane-utilizing biomasses [J]. Journal of Hazardous Materials, 2006, 138: 29-39.
Ferguson J F, Pietari J M H. Anaerobic transformations and bioremediation of chlorinated solvents [J]. Environmental Pollution, 2000, 107: 209-215. Ferguson J F, Pietari J M H. Anaerobic transformations and bioremediation of chlorinated solvents [J]. Environmental Pollution, 2000, 107: 209-215.
Pietari J M H. Characterization of PCE dechlorinating cultures and isolation of a novel PCE to cis-1,2-DCE halorespiring bacterium . Washington D C: University of Washington Graduate School, 2002. Pietari J M H. Characterization of PCE dechlorinating cultures and isolation of a novel PCE to cis-1,2-DCE halorespiring bacterium . Washington D C: University of Washington Graduate School, 2002.
Robinson C, Barry D A. Design tool for estimation of buffer requirement for enhanced reductive dechlorination of chlorinated solvents in groundwater [J]. Environmental Modelling & Software, 2009, 24: 1332-1338. Robinson C, Barry D A. Design tool for estimation of buffer requirement for enhanced reductive dechlorination of chlorinated solvents in groundwater [J]. Environmental Modelling & Software, 2009, 24: 1332-1338.
Haston Z C, McCarty P L. Chlorinated ethene half-velocity coefficients (Ks) for reductive dehalogenation [J]. Environmental Science & Technology, 1999, 33: 223-226. Haston Z C, McCarty P L. Chlorinated ethene half-velocity coefficients (Ks) for reductive dehalogenation [J]. Environmental Science & Technology, 1999, 33: 223-226.
Lomheim L S. Anaerobic biodegradation of high concen-trations of perchloroethene (PCE) and 1,2-dichloroethane (1,2-DCA) . Canada: University of Toronto, 2002. Lomheim L S. Anaerobic biodegradation of high concen-trations of perchloroethene (PCE) and 1,2-dichloroethane (1,2-DCA) . Canada: University of Toronto, 2002.
Aulenta F, Majone M, Verbo P, Tandoi V. Complete dechlorination of tetrarchloroethene to ethene in presence of methanogenesis and acetogenesis by an anaerobic sediment microcosm[J]. Biodegradation, 2002, 13: 411-424. Aulenta F, Majone M, Verbo P, Tandoi V. Complete dechlorination of tetrarchloroethene to ethene in presence of methanogenesis and acetogenesis by an anaerobic sediment microcosm[J]. Biodegradation, 2002, 13: 411-424.
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