Potential for co-metabolic oxidation of TCE and evidence for its occurrence in a large-scale aquifer survey

Gafni, Almog; Siebner, Hagar; Bernstein, Anat

doi:10.1016/j.watres.2019.115431

Cited by 27 publications

(13 citation statements)

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“…Thus, microorganisms can develop multiple physiological tolerance mechanisms and metabolic strategies under stressful conditions to degrade diverse environmental pollutants in ecosystems ( Zhou et al, 2020 , 2022 ; Koner et al, 2022 ). Studies have shown that many TCE-degrading microorganisms existed in TCE-contaminated sites ( Lowe et al, 2002 ; de Guzman et al, 2018 ; Gafni et al, 2020 ). Reductive dechlorination bacteria have been proved to be closely related to the TCE-dechlorinating degradation in TCE-contaminated superfund sites ( Lowe et al, 2002 ; de Guzman et al, 2018 ).…”

Section: Effects Of Tce On Bacterial Communitymentioning

confidence: 99%

“…Reductive dechlorination bacteria have been proved to be closely related to the TCE-dechlorinating degradation in TCE-contaminated superfund sites ( Lowe et al, 2002 ; de Guzman et al, 2018 ). Moreover, local microbial communities were reported can oxidize TCE in polluted water from Israeli Coastal Aquifer ( Gafni et al, 2020 ). A recent study showed that the degree of soil contamination by TCE was positively correlated with the abundance of TCE-degrading taxa ( Koner et al, 2022 ).…”

Section: Effects Of Tce On Bacterial Communitymentioning

confidence: 99%

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Recent advances and trends of trichloroethylene biodegradation: A critical review

Man

Niu

et al. 2022

Front. Microbiol.

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Trichloroethylene (TCE) is a ubiquitous chlorinated aliphatic hydrocarbon (CAH) in the environment, which is a Group 1 carcinogen with negative impacts on human health and ecosystems. Based on a series of recent advances, the environmental behavior and biodegradation process on TCE biodegradation need to be reviewed systematically. Four main biodegradation processes leading to TCE biodegradation by isolated bacteria and mixed cultures are anaerobic reductive dechlorination, anaerobic cometabolic reductive dichlorination, aerobic co-metabolism, and aerobic direct oxidation. More attention has been paid to the aerobic co-metabolism of TCE. Laboratory and field studies have demonstrated that bacterial isolates or mixed cultures containing Dehalococcoides or Dehalogenimonas can catalyze reductive dechlorination of TCE to ethene. The mechanisms, pathways, and enzymes of TCE biodegradation were reviewed, and the factors affecting the biodegradation process were discussed. Besides, the research progress on material-mediated enhanced biodegradation technologies of TCE through the combination of zero-valent iron (ZVI) or biochar with microorganisms was introduced. Furthermore, we reviewed the current research on TCE biodegradation in field applications, and finally provided the development prospects of TCE biodegradation based on the existing challenges. We hope that this review will provide guidance and specific recommendations for future studies on CAHs biodegradation in laboratory and field applications.

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Section: Effects Of Tce On Bacterial Communitymentioning

confidence: 99%

Section: Effects Of Tce On Bacterial Communitymentioning

confidence: 99%

Recent advances and trends of trichloroethylene biodegradation: A critical review

Man

Niu

et al. 2022

Front. Microbiol.

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“…Isotope data also rejects the occurrence of aerobic degradation of TCE in the Magen site (Hunkeler et al 2011). Thus, until now isotope evidences for microbial degradation are limited to a single anaerobic site within the aquifer, and to actively remediated sites, with most enriched δ 13 C value of −4.6‰ detected in a permanganate-treated site (Gafni et al 2020).…”

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confidence: 90%

“…No clear isotope proof was obtained for the occurrence of the aerobic pathway in the aquifer. This is despite the fact that bacteria, capable of catalyzing the process, are widely abundant (Gafni et al 2020). Isotope data also rejects the occurrence of aerobic degradation of TCE in the Magen site (Hunkeler et al 2011).…”

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confidence: 91%

Tracking Degradation of Organic Pollutants in Israeli Groundwater by Stable Isotope Analysis

Bernstein

Gelman

2020

Springer Hydrogeology

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Gasoline stations and industrial areas are between the most significant sources of groundwater contamination by harmful organic compounds in Israel. Gasoline components, chlorinated ethylenes and nitro-explosives are among the most frequently detected groundwater pollutants (Sagi-Ben Moshe and Reshef 2018). Biochemical degradation and/or attenuation by non-destructive physical processes (e.g. absorption, dispersion, evaporation) affect the distribution of the organic pollutants in the environmental systems. Understanding of these environmental processes is important for mitigation of environmental problems caused by organic contaminants. The accepted method of following-up of the spread of the pollution through space is usually based on the monitoring the change in the pollutants' concentration and/or the concentration of the daughter products over distance and time. However, this solution is not always conclusive enough, especially in the case of heterogeneous environment systems. In the last decades, compound-specific isotope analysis (CSIA) has developed as a complementary sensitive tool to tackle the fate of organic contaminants. This methodology is based on monitoring shifts in the isotopic composition of the target compounds during the different transformation scenarios. Such shifts stem from the fact that light isotopes are converted slightly more rapidly than heavy ones (Elsner et al. 2005;Braeckevelt et al. 2012;Thullner et al. 2012). It is well accepted that shifts in the isotopic composition of a molecule are only little, if at all, influenced by processes in which the inner bonds remain intact, such as volatilization, sorption or dilution (Meckenstock et al. 2004;Braeckevelt et al. 2012). Therefore, significant isotopic shifts observed along a contamination plume

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“…most common pollutants found in contaminated groundwater in the United States and worldwide [2][3][4] because of leakage, spillage, improper disposal or management. TCE's toxicity and possible carcinogenic properties [5][6][7] cause a great health concern when it is found in contaminated groundwater.…”

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confidence: 99%

Continuous trichloroethylene biodegradation by Pseudomonas putida F1 in a biofilm reactor and determination of an optimal feeding path via a response surface model

Muñoz

Bienkowski

et al. 2021

Engineering Reports

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Reactor design and feeding strategies are the key to successful trichloroethylene (TCE) treatment via cometabolism. An easy to maintain and operate laboratory scale packed-bed biofilm reactor, featuring recycled gas and liquid effluent streams, was developed for continuous aerobic aqueous-phase TCE biodegradation using Pseudomonas putida F1 as the biocatalyst and toluene as the primary substrate. The impacts of the influent toluene and TCE concentrations, flow rates, and recycle rates on TCE biodegradation were studied. Multivariate factors, including influent toluene and TCE concentrations, their interactions, and flow rates were further analyzed via a response surface model (RSM). Results showed that such bioreactor design eliminated oxygen limitation and removed or substantially reduced toluene competitive inhibition on TCE degradation. A TCE removal efficiency of >90% was achieved at an influent TCE concentration of ≤0.3 mg/L under an ∼8-min mean hydraulic retention time. Toluene and TCE concentrations, in both linear and quadratic forms, were the most significant factors for TCE degradation, indicating both cell regenerating and inhibiting effects from toluene and a toxic effect from TCE. This RSM analysis has successfully identified an optimal influent toluene concentration path for each influent TCE concentration and provided insight for an extended TCE degradation at higher TCE concentrations. K E Y W O R D Scometabolism, packed-bed biofilm reactor, Pseudomonas putida F1, response surface methodology, trichloroethylene INTRODUCTIONAlthough trichloroethylene (TCE), a major chemical product, has been widely used as a cleansing agent or solvent for metal degreasing and solvent extraction in various industries and in household products, 1 it has become one of theThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Potential for co-metabolic oxidation of TCE and evidence for its occurrence in a large-scale aquifer survey

Cited by 27 publications

References 76 publications

Recent advances and trends of trichloroethylene biodegradation: A critical review

Recent advances and trends of trichloroethylene biodegradation: A critical review

Tracking Degradation of Organic Pollutants in Israeli Groundwater by Stable Isotope Analysis

Continuous trichloroethylene biodegradation by Pseudomonas putida F1 in a biofilm reactor and determination of an optimal feeding path via a response surface model

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