Biotransformation rates of chloroform under anaerobic conditions—I. Methanogenesis

Gupta, M. P.; Sharma, Devesh; Suidan, Makram T.; Sayles, Gregory D.

doi:10.1016/0043-1354(96)00005-x

Cited by 31 publications

(23 citation statements)

References 12 publications

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“…Dichloromethane produced from CF dechlorination is of far lesser concern, because it is much less inhibitory to other microbial processes and it is a growth substrate for aerobic as well as anaerobic microorganisms. DCM is metabolized by denitrifying (Kohler-Staub et al, 1995;Freedman et al, 1997), methanogenic and acetogenic cultures (Braus-Stromeyer et al, 1993;Gupta et al, 1996;Mägli et al, 1998).…”

Section: Resultsmentioning

confidence: 99%

“…There is no need to add a separate growth substrate and microbial growth and pollutant removal are tightly coupled. Cometabolic transformation of CF has been observed in methanogenic, acetogenic and sulfatereducing cultures (Bouwer and McCarty, 1983;Freedman et al, 1995;Weathers and Parkin, 1995;Gupta et al, 1996;Koons et al, 2001;Olivas et al, 2002;Guerrero-Barajas and Field, 2005;Chung and Rittmann, 2007;, some of which also dechlorinate structurally similar compounds such as 1,1,1-trichloroethane (TCA) ( Fig. 1B).…”

Section: Introductionmentioning

confidence: 97%

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Chloroform respiration to dichloromethane by a Dehalobacter population

Grostern

Duhamel

Dworatzek³

et al. 2010

Environmental Microbiology

116

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Chloroform (CF), or trichloromethane, is an ubiquitous environmental pollutant because of its widespread industrial use, historically poor disposal and recalcitrance to biodegradation. Chloroform is a potent inhibitor of metabolism and no known organism uses it as a growth substrate. We discovered that CF was rapidly and sustainably dechlorinated in the course of investigating anaerobic reductive dechlorination of 1,1,1-trichloroethane in a Dehalobacter-containing culture. Like 1,1,1-trichloroethane dechlorination in this culture, CF dechlorination was a growth-linked respiratory process, requiring H(2) as an electron donor and CF as an electron acceptor. Moreover, the same specific reductive dehalogenase likely catalyzed both reactions. This Dehalobacter population appears specialized for substrates with three halogen substituents on the same carbon atom, with widespread implications for bioremediation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Chloroform respiration to dichloromethane by a Dehalobacter population

Grostern

Duhamel

Dworatzek³

et al. 2010

Environmental Microbiology

116

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“…Although aerobic degradation of chloroform has been reported in the presence of methanotrophic (Alvarez-Cohen et al, 1992), ammonia-oxidizing (Vannelli et al, 1990), and toluene-oxidizing (McClay et al, 1996) bacteria, the fact that the methane and ammonia concentrations and the total organic content of Layers 2 and 4 are below detection levels indicates that oxidative co-metabolites are not present in sufficient quantity to support significant co-metabolism of chloroform in this hydrologic system. Similarly, although reductive dechlorination of chloroform has been observed under anaerobic conditions McCarty, 1983a, 1983b;Gupta et al, 1996aGupta et al, , 1996bBagley and Gossett, 1995;Freedman and Gossett, 1991), efficient reductive dechlorination requires significant concentrations of a suitable electron donor (Freedman and Gossett, 1991), which are singularly lacking in the aquifer systems studied.…”

Section: Chloroform Fatementioning

confidence: 99%

BIODEGRADATION OF DISINFECTION BYPRODUCTS AS A POTENTIAL REMOVAL PROCESS DURING AQUIFER STORAGE RECOVERY¹

Landmeyer

Bradley

Thomas

2000

J American Water Resour Assoc

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The biodegradation potential of two drinking water disinfection byproducts was investigated using aquifer materials obtained from approximately 100 and 200 meters below land surface in an aerobic aquifer system undergoing aquifer storage recovery of treated surface water. No significant biodegradation of a model trihalomethane compound, chloroform, was observed in aquifer microcosms under aerobic or anaerobic conditions. In contrast, between 16 and 27 percent mineralization of a radiolabeled model haloacetic acid compound, chloroacetic acid, was observed. These results indicate that although the potential for biodegradation of chloroacetic acid exists in deep aquifer systems, chloroform entrained within these aquifers or formed in situ will tend to persist. These results have important implications for water managers planning to meet anticipated lowered permissible levels of trihalomethanes in drinking water.

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“…For instance, 1,1,1-TCA (Erasin et al 1994) and especially CF (Chidthaisong & Cornard 2000) are known to inhibit methanogenesis and reductive dechlorination of chlorinated ethenes at concentration as low as 77 mg/L (Bagley et al 2000;Maymo-Gatell et al 2001;Duhamel et al 2002). CF has been observed to inhibit its own biodegradation and acetate-based methanogenesis at approximately 330 mg/L, although inhibition of sulfate reduction took approximately 2 mg/L (Gupta et al 1996). Others have seen a direct relationship between CF concentration and inhibition of unacclimated cultures (Stickley 1979;Yang & Speece 1986;Narayan et al 1993).…”

Section: Introductionmentioning

confidence: 97%

Simultaneous bio-reduction of trichloroethene, trichloroethane, and chloroform using a hydrogen-based membrane biofilm reactor

Chung

Rittmann

2008

Water Science and Technology

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The contamination of water by chlorinated solvents is recognized as a serious and widespread problem throughout the industrialized world. Here, we focus on three chlorinated solvents that are among those most commonly detected and that have distinct chemical features: trichloroethene (TCE), trichloroethane (TCA), and chloroform (CF). Because many contaminated waters contain mixtures of the chlorinated solvents, a treatment technology that detoxifies all of them simultaneously is highly desirable. The membrane biofilm reactor (MBfR) is a recent technological advance that makes it possible to deliver H(2) gas to bacteria efficiently and safely, despite hydrogen's low water solubility and risk of forming a combustible atmosphere when mixed with air. The objectives of this work are to document whether or not the three chlorinated compounds can be dechlorinated simultaneously in a H(2)-based MBfR and to determine if competitive or inhibitory interactions affect bio-reduction of any of the solvents. The main finding is a demonstration that directly using H(2) as the electron donor makes it possible to bio-reduce combinations of different chlorinated solvents. This finding supports that the H(2)-based MBfR can treat multiple chlorinated solvents in one step, addressing a common groundwater situation. We saw possible evidence of inhibition by CF at a concentration greater than about 1 muM, competition for H(2) from sulfate and nitrate reductions, and possible inhibition of TCE reduction from the accumulation of chloroethane (CA) or chloromethane (CM).

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Biotransformation rates of chloroform under anaerobic conditions—I. Methanogenesis

Cited by 31 publications

References 12 publications

Chloroform respiration to dichloromethane by a Dehalobacter population

Chloroform respiration to dichloromethane by a Dehalobacter population

BIODEGRADATION OF DISINFECTION BYPRODUCTS AS A POTENTIAL REMOVAL PROCESS DURING AQUIFER STORAGE RECOVERY¹

Simultaneous bio-reduction of trichloroethene, trichloroethane, and chloroform using a hydrogen-based membrane biofilm reactor

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Biotransformation rates of chloroform under anaerobic conditions—I. Methanogenesis

Cited by 31 publications

References 12 publications

Chloroform respiration to dichloromethane by a Dehalobacter population

Chloroform respiration to dichloromethane by a Dehalobacter population

BIODEGRADATION OF DISINFECTION BYPRODUCTS AS A POTENTIAL REMOVAL PROCESS DURING AQUIFER STORAGE RECOVERY1

Simultaneous bio-reduction of trichloroethene, trichloroethane, and chloroform using a hydrogen-based membrane biofilm reactor

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BIODEGRADATION OF DISINFECTION BYPRODUCTS AS A POTENTIAL REMOVAL PROCESS DURING AQUIFER STORAGE RECOVERY¹