Results 101 to 110 of about 654 (126)
Resilience and recovery of Dehalococcoides mccartyi following low pH exposure [PDF]
FEMS Microbiology Ecology, 2017 Bioremediation treatment (e.g. biostimulation) can decrease groundwater pH with consequences for Dehalococcoides mccartyi (Dhc) reductive dechlorination activity. To explore the pH resilience of Dhc, the Dhc-containing consortium BDI was exposed to pH 5.5 for up to 40 days. Following 8- and 16-day exposure periods to pH 5.5, dechlorination activity and
Yi Yang, Natalie L Cápiro, Jun Yan
exaly +3 more sources
Reductive Dechlorination of High Concentrations of Chloroethenes by a Dehalococcoides mccartyi Strain 11 G [PDF]
FEMS Microbiology Ecology, 2018 Chloroethenes are common groundwater and soil contaminants due to extensive historic utilization and inappropriate discharge. The tendency for chloroethenes to become sequestered as dense non-aqueous phase liquids (DNAPL)-a point source to groundwater contamination and causing high concentrations of chloroethenes in proximal aquifers poses a great ...
Siyan Zhao +2 more
exaly +3 more sources
Growth of Dehalococcoides mccartyi species in an autotrophic consortium producing limited acetate [PDF]
Biodegradation, 2018 The dechlorinating Dehalococcoides mccartyi species requires acetate as carbon source, but little is known on its growth under acetate limiting conditions. In this study, we observed growth and dechlorination of a D. mccartyi-containing mixed consortium in a fixed-carbon-free medium with trichloroethene in the aqueous phase and H2/CO2 in the headspace.
Chang Ding +2 more
exaly +5 more sources
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Kinetics of dechlorination by Dehalococcoides mccartyi using different carbon sources
Journal of Contaminant Hydrology, 2014Stimulated anaerobic dechlorination is generally considered a valuable step for the remediation of aquifers polluted with chlorinated ethenes (CEs). Correct simulation and prediction of this process in situ, however, require good knowledge of the associated biological reactions.
Schneidewind, U. +10 more
openaire +5 more sources
Dehalococcoides mccartyi Strain GEO12 Has a Natural Tolerance to Chloroform Inhibition
Environmental Science & Technology, 2020Cocontamination by chloroform and chloroethenes often confounds bioremediation efforts. Here, we describe Dehalococcoides mccartyi strain GEO12 that dechlorinates trichloroethene to ethene in 14 μM (1.6 mg·L-1) chloroform. The same chloroform concentration effectively inhibited dechlorination in Dehalococcoides strains ANAS2, 11a, and BAV1.
Chang Ding +2 more
openaire +2 more sources
Environmental Science & Technology, 2021
Bioremediation of chlorinated ethenes in anoxic aquifers hinges on organohalide-respiring Dehalococcoidia expressing vinyl chloride (VC) reductive dehalogenase (RDase). The tceA gene encoding the trichloroethene-dechlorinating RDase TceA is frequently detected in contaminated groundwater but not recognized as a biomarker for VC detoxification.
Jun Yan +9 more
openaire +2 more sources
Bioremediation of chlorinated ethenes in anoxic aquifers hinges on organohalide-respiring Dehalococcoidia expressing vinyl chloride (VC) reductive dehalogenase (RDase). The tceA gene encoding the trichloroethene-dechlorinating RDase TceA is frequently detected in contaminated groundwater but not recognized as a biomarker for VC detoxification.
Jun Yan +9 more
openaire +2 more sources
Environmental Science & Technology, 2015
Dehalococcoides mccartyi strains transform many halogenated compounds and are used for bioremediation. Such anaerobic transformations were intensively studied with chlorinated and simply structured compounds such as chlorinated benzenes, ethenes, and ethanes.
Chao, Yang +4 more
openaire +2 more sources
Dehalococcoides mccartyi strains transform many halogenated compounds and are used for bioremediation. Such anaerobic transformations were intensively studied with chlorinated and simply structured compounds such as chlorinated benzenes, ethenes, and ethanes.
Chao, Yang +4 more
openaire +2 more sources
Environmental Science & Technology, 2018
Anaerobic bacteria play critical roles in the environmental bioremediation of polychlorinated biphenyls (PCBs). However, in situ applications of PCB dechlorinating anaerobes have been largely impeded by difficulties in growing PCB dechlorinators to a high cell abundance in short time periods.
Chen Chen, Jianzhong He
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Anaerobic bacteria play critical roles in the environmental bioremediation of polychlorinated biphenyls (PCBs). However, in situ applications of PCB dechlorinating anaerobes have been largely impeded by difficulties in growing PCB dechlorinators to a high cell abundance in short time periods.
Chen Chen, Jianzhong He
openaire +2 more sources
Environmental Science & Technology, 2012
Brominated aromatics are used in many different applications but occur also naturally. Here, we demonstrate organohalide respiration and growth of Dehalococcoides mccartyi strain CBDB1 with 1,2,4-tribromobenzene, all three dibrominated benzene congeners and monobromobenzene. All bromobenzenes were fully dehalogenated to benzene.
Wagner +4 more
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Brominated aromatics are used in many different applications but occur also naturally. Here, we demonstrate organohalide respiration and growth of Dehalococcoides mccartyi strain CBDB1 with 1,2,4-tribromobenzene, all three dibrominated benzene congeners and monobromobenzene. All bromobenzenes were fully dehalogenated to benzene.
Wagner +4 more
openaire +2 more sources
Unexpected Specificity of Interspecies Cobamide Transfer from Geobacter spp. to Organohalide-Respiring Dehalococcoides mccartyi Strains [PDF]
Applied and Environmental Microbiology, 2012 ABSTRACT Dehalococcoides mccartyi strains conserve energy from reductive dechlorination reactions catalyzed by corrinoid-dependent reductive dehalogenase enzyme systems. Dehalococcoides lacks the ability for de novo corrinoid synthesis, and pure cultures require the ...
Jun Yan +2 more
exaly +3 more sources