DOI: 10.1016/j.watres.2018.12.022
Scopus记录号: 2-s2.0-85059405388
论文题名: Aerobic metabolic trichloroethene biodegradation under field-relevant conditions
作者: Gaza S. ; Schmidt K.R. ; Weigold P. ; Heidinger M. ; Tiehm A.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 343
结束页码: 348
语种: 英语
英文关键词: Aerobic metabolic biodegradation
; Bioaugmentation
; Bioremediation
; Field conditions
; Trichloroethene
Scopus关键词: Batch reactors
; Biodegradation
; Bioremediation
; Biotechnology
; Contamination
; Groundwater
; Metabolism
; Trichloroethylene
; 1 ,1-dichloroethene
; Bio-augmentation
; Cis-1 ,2-dichloroethene
; Enrichment culture
; Field conditions
; Fixed bed reactor
; Groundwater contaminants
; Growth substrates
; Groundwater pollution
; 1,2 dichloroethylene
; ground water
; toluene
; toluene ortho monooxygenase
; trichloroethylene
; unclassified drug
; vinyl chloride
; vinylidene chloride
; bacterium
; biodegradation
; bioreactor
; bioremediation
; experimental study
; field method
; groundwater
; groundwater pollution
; metabolism
; oxic conditions
; pollutant removal
; trichloroethylene
; aerobic metabolism
; Article
; bacterium culture
; biodegradation
; bioremediation
; gas chromatography
; inorganic nutrient
; microcosm
; nonhuman
; nutrient availability
; priority journal
; water pollution
; Bacteria (microorganisms)
英文摘要: Chloroethenes belong to the most widely distributed groundwater contaminants. Since 2014, it has been known that trichloroethene (TCE) can be degraded aerobically and metabolically as growth substrate by a mixed bacterial enrichment culture (named SF culture). In this study, the degradation capabilities under a range of field-relevant conditions were investigated in fixed-bed reactors as well as in batch experiments. Aerobic metabolic TCE degradation was stable over the long term, with degradation optima at 22 °C and pH 7. Degradation of up to 400 μM TCE was observed. The longest starvation period after which degradation of TCE was regained was 112 days. The possible co-contaminants perchloroethene, trans-1,2-dichloroethene, and cis-1,2-dichloroethene did not inhibit TCE degradation, even though they were not degraded themselves. The presence of equimolar amounts of 1,1-dichloroethene and vinyl chloride inhibited TCE degradation. Experiments with groundwater from different chloroethene-contaminated field sites proved the potential of the SF culture for bioaugmentation. Thus, aerobic metabolic TCE degradation should be considered as a promising method for the bioremediation of field sites with TCE as the main contaminant. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122045
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Environmental Biotechnology, Water Technology Center, Karlsruher Str. 84, Karlsruhe, 76139, Germany; Hydroisotop GmbH, Woelkestr. 9, Schweitenkirchen, 85301, Germany
Recommended Citation:
Gaza S.,Schmidt K.R.,Weigold P.,et al. Aerobic metabolic trichloroethene biodegradation under field-relevant conditions[J]. Water Research,2019-01-01