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dc.contributor.authorBorch, Thomas
dc.contributor.authorAmbus, Per
dc.contributor.authorLaturnus, Frank
dc.contributor.authorSvensmark, Bo
dc.contributor.authorGrøn, Christian
dc.date.accessioned2017-08-17T14:13:43Z
dc.date.available2017-08-17T14:13:43Z
dc.date.issued2003-04
dc.identifier.citationBorch, T., P. Ambus, F. Laturnus, B. Svensmark and C. Gr¸n, "Biodegradation of Chlorinated Solvents in a Water Unsaturated Topsoil," Chemosphere, 51(2):1 (2003).en_US
dc.identifier.issn0045-6535
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/13538
dc.description.abstractIn order to investigate topsoils as potential sinks for chlorinated solvents from the atmosphere, the degradation of trichloromethane (CHCl3), 1,1,1-trichloroethane (CH3CCl3), tetrachloromethane (CCl4), trichloroethene (C2HCl3) and tetrachloroethene (C2Cl4) was studied in anoxic laboratory experiments designed to simulate denitrifying conditions in water unsaturated topsoil. Active denitrification was demonstrated by measuring the release of 15N in N2 to the headspace from added 15N labeled nitrate. The degradation of chlorinated aliphatic compounds was followed by measuring their concentrations in the headspace above the soil. The headspace concentrations of all the chlorinated solvents except CH3CCl3 were significantly (P⩽0.05) lower after 41 days in biologically active batches as compared to sterile batches. For the compounds with significantly decreasing headspace concentrations, the decline was the least for CHCl3 within the 41 days of incubation. The headspace concentrations of trichloro- and tetrachloroethene decreased more than 50% during the first 20 days with no considerable indication of abiotic transformation. While slow abiotic removal was observed, tetrachloromethane was completely biotransformed after 16 days. Based on the results in this study, we conclude that anaerobic topsoils are potential sinks for these contaminants, and that a natural attenuation potential exists, even in water unsaturated topsoils.en_US
dc.titleBiodegradation of chlorinated solvents in a water unsaturated topsoilen_US
dc.typeArticleen_US
mus.citation.extentfirstpage143en_US
mus.citation.extentlastpage152en_US
mus.citation.issue2en_US
mus.citation.journaltitleChemosphereen_US
mus.citation.volume51en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.doi10.1016/s0045-6535(02)00851-2en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US
mus.data.thumbpage7en_US


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