Potential for anaerobic bioremediation of BTEX in petroleum-contaminated aquifers
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Laboratory incubations of aquifer material or enrichments derived from aquifer material as well as geochemical data have suggested that, under the appropriate conditions, BTEX components of petroleum (benzene, toluene, ethylbenzene and xylene) can be degraded in the absence of molecular oxygen with either Fe(III), sulfate, or nitrate serving as the electron acceptor. BTEX degradation under methanogenic conditions has also been observed. However, especially for benzene, the BTEX contaminant of greatest concern, anaerobic degradation is often difficult to establish and maintain in laboratory incubations. Although studies to date have suggested that naturally occurring anaerobic BTEX degradation has the potential to remove significant quantities of BTEX from petroleum-contaminated aquifers, and mechanisms for stimulating anaerobic BTEX degradation in laboratory incubations have been developed, further study of the organisms involved in this metabolism and the factors controlling their distribution and activity are required before it will be possible to design rational strategies for accelerating anaerobic BTEX degradation in contaminated aquifers.
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Several important xenobiotics that contaminate aquifers can be degraded under anaerobic conditions by Fe(III)- and Mn(IV)-reducing micro-organisms.
“Recent studies have shown that several important xenobiotics that contaminate aquifers can also be degraded under anaerobic conditions by Fe(III)-and Mn(IV)-reducing micro-organisms [9,18,19].”
From Microbial reduction of metals and radionuclides (2003) · cites this paper as [19]
The section ‘BTEX oxidation coupled to Fe(III) reduction’ reports anaerobic degradation of toluene by an Fe(III)-reducing microorganism and evidence for benzene oxidation by Fe(III)-reducing enrichments. The Introduction says BTEX oxidation coupled to Mn(IV) reduction had not been investigated and was considered likely, so the claim overstates the evidence for Mn(IV)-reducing microorganisms. (LLM, conf=0.90)
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References 11 · Cited by 204
Research works printed but not linked: 2
- [26]26. Lovley DR, JD Coates and EJP Phillips. 1996. Novel mode of suring rates of biodegradation in a petroleum hydrocarbon-contami- nated aquifer. Groundwater (in press). microbial respiration: electron transport to humic acids. (manuscript submitted).
- [35]35. Lovley DR and JC Woodward. 1996. Mechanism for chelator stimu- lation of microbial Fe(III) oxide reduction. Chem Geol (in press). obic degradation of toluene and xylene by aquifer microorganisms under sulfate-reducing conditions. Appl Environ Microbiol 58: 794- 44
- Authors
- Lovley, D. R.
- Affiliations
- University of Massachusetts Amherst (US)
- Corresponding author
- Lovley, D R
- ORCID
- Lovley, D R
- Venue
- Journal of Industrial Microbiology and Biotechnology
- Publisher
- Oxford University Press (OUP)
- Published
- 1997-02-01
- Volume
- 18
- Issue
- 2-3
- Pages
- 75-81
- ISSN
- 1367-5435 (ISSN-L)
- 1476-5535
- OpenAlex
- W2031117559
- Cited by
- 204
- References
- 11
- Citations by year
- 2024: 3 · 2023: 1 · 2022: 4 · 2021: 7 · 2020: 7 · 2019: 5 · 2018: 3 · 2017: 8 · 2016: 3 · 2015: 7 · 2014: 11 · 2013: 14 · 2012: 4
- FWCI
- 13.31
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Industrial Microbiology & Biotechnology (publishedVersion)
- ScholarWorks@UMassAmherst (University of Massachusetts Amherst) (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Pollution › Microbial bioremediation and biosurfactants
- Physical Sciences › Environmental Science › Environmental Chemistry › Environmental Chemistry and Analysis
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Keywords
- BTEX, anaerobic bioremediation, petroleum-contaminated aquifer, benzene degradation, toluene, ethylbenzene, xylene, sulfate reduction, nitrate reduction, methanogenic degradation, laboratory incubation, groundwater contamination
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