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1 edition of Anaerobic biodegradation of BTEX in aquifer material found in the catalog.

Anaerobic biodegradation of BTEX in aquifer material

Anaerobic biodegradation of BTEX in aquifer material

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  • 13 Currently reading

Published by U.S. Environmental Protection Agency, Research and Development, National Risk Management Research Laboratory in Ada, OK .
Written in English

    Subjects:
  • Anaerobic bacteria -- United States,
  • Bioremediation -- United States

  • Edition Notes

    StatementRobert C. Borden ... [et al.]
    SeriesEnvironmental research brief
    ContributionsBorden, Robert C, National Risk Management Research Laboratory (U.S.)
    The Physical Object
    Pagination9 p. :
    ID Numbers
    Open LibraryOL15013983M

    Concentrations of BTEX compounds were persistent over time in wells MW-5, MW-6, and MW Of the alkylbenzenes, toluene is the most labile to anaerobic biodegradation. The behavior of toluene in these wells is presented in Figure 3. Although toluene is readily biodegraded in ground water, it was persistent in MW-5 and MW-6 and to a lesser File Size: KB.   mechanism of aerobic & an-aerobic biodegradation presented by: sukhjeet kaur bt(h)3sem 10/5/ 1 2. CONTENT Biodegradation Types Aerobic degradation Mechanism of aerobic degradation Anaerobic degradation Mechanism of anaerobic degradation Difference between aerobic and anaerobic 10/5/ 2.

    biodegradation in a gasoline-contaminated aquifer near Rocky Point, N.C. Groundwater at this site contains dissolved benzene, toluene, ethylbenzene, and xylene isomers (BTEX) associated with an underground storage tank release. Monoaromatic pollutants such as benzene, toluene, ethyl benzene and xylenes are the most commonly cited environmental contaminants in recent years and have attracted the attention of numerous researchers as well as environmental agencies. Recently.

    @article{osti_, title = {Biodegradation of monoaromatic hydrocarbons by aquifer microorganisms using oxygen, nitrate, or nitrous oxide as the terminal electron acceptor}, author = {Hutchins, S R}, abstractNote = {Leaking underground storage tanks are a major source of groundwater contamination by petroleum hydrocarbons. Although these aromatic hydrocarbons are relatively water soluble. @article{osti_, title = {Anaerobic BTEX biodegradation in laboratory microcosms and in situ columns}, author = {Hunt, M J and Barlaz, M A and Borden, R C and Beckman, M A}, abstractNote = {Assessing the potential for natural bioremediation in the subsurface is complicated by site-specific conditions and the methods used to estimate biodegradation rates.


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Anaerobic biodegradation of BTEX in aquifer material Download PDF EPUB FB2

Anaerobic biodegradation of BTEX in aquifer material. Ada, OK: U.S. Environmental Protection Agency, Research and Development, National Risk Management Research Laboratory, [] (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type: Book, Internet Resource: All Authors.

United States Environmental Protection Agency National Risk Management Research Laboratory Ada, OK Research and Development EPA//S/ vvEPA August ENVIRONMENTAL RESEARCH BRI Anaerobic Biodegradation of BTEX in Aquifer Material Robert C. Borden*, Melody J.

Hunt*, Michael B. Shafer* and Morton A. Barlaz* Abstract Laboratory and field experiments were. BibTeX @MISC{States97environmentalresearch, author = {United States and National Risk Management and Robert C.

Borden and Melody J. Hunt and Michael B. Shafer and Morton A. Barlaz}, title = {ENVIRONMENTAL RESEARCH BRIEF Anaerobic Biodegradation of BTEX in Aquifer Material}, year =.

This study focuses on the anaerobic biodegradation of benzene, toluene, ethylbenzene and xylene isomers (BTEX) in aquifer material from two petroleum-contaminated aquifers; Sleeping Bear Dunes National Lakeshore (SB) in Michigan and a site near Rocky Point, North Carolina (RP). The two sites examined were chosen because of their differences in plume size, contaminant residence time.

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 Cited by: BTEX biodegradation by an indigenous deep subsurface microbial community was evaluated in a water sample collected in the area of an underground gas storage.

Five different sulfate-reducing microbial communities able to use at least either benzene, toluene, ethylbenzene, or xylene (BTEX) compounds were studied.

A total of 21 different bacterial phylotypes were identified, each community Cited by: Aerobic biodegradation of BTEX: Progresses and Prospects Article (PDF Available) in Journal of Environmental Chemical Engineering 2(2) June with 1, Reads How we measure 'reads'.

required: 1) to use aquifer material, groundwater, or leachate (preferably from an anaerobic site, if stated) and 2) to be incubated under anaerobic conditions.

Studies where the aquifer material was seeded with microorganisms from other sources, e.g. sewage, pond sediment, and enrichment culture experiments were not included.

As BTEX compounds are often present in the anoxic zones of the environment, anaerobic bioremediation is an attractive remediation technique.

Anaerobic degradation of aromatic hydrocarbons was first described in (Kuhn et al. ).Since then, the degradation pathways of toluene and ethylbenzene by denitrifying and sulfate-reducing microorganisms in particular have been by: The anaerobic biodegradation potential of BTEX was determined in microcosms prepared with subsoil or well water samples amended with NO 3 ‐, Fe ‐3, SO 4 ‐2, or no added EA.

Well water from the “aerobic” or “anaerobic” portions of one site plume showed losses in BTEX, but there was no correlation between the presence of reduced EA Cited by: Anaerobic biodegradation of BTEX Although the importance of anaerobic degradation processes in controlling intrinsic bioremediation of BTEX (benzene, toluene, ethylbenzene, and xylenes) is well-recognized, a limited understanding of anaerobic mechanisms has prevented quantification of field-scale biodegradation losses.

Intrinsic Biodegradation of MTBE and BTEX in a Gasoline-Contaminated Aquifer Article (PDF Available) in Water Resources Research 33(5) May with Reads How we measure 'reads'.

ANAEROBES CAPABLE OF OXIDISING BTEX COMPOUNDS. Early research on the degradation of BTEX hydrocarbons was mostly directed towards aerobic degraders and degradation pathways (Zylstra and Gibson ; Pérez-Pantoja, González and Pieper ).Recent years have seen a substantial increase in the number of isolated anaerobic degraders and enrichment cultures, as well Cited by: BTEX biodegradation by an indigenous deep subsurface microbial community was evaluated in a water sample collected in the area of an underground gas storage.

Five different sulfate-reducing microbial communities able to use at least either benzene, toluene, ethylbenzene, or. Anaerobic biodegradation of substances to metabolic acids may significantly lower the pH (Parsons )—for example, the production of H + ions during reductive dechlorination or the production of volatile fatty acids from electron donor fermentation tends to decrease the pH of groundwater (ITRC ).

A pH below 5 or 4 standard units could. AEROBIC BIODEGRADATION OF ORGANIC CHEMICALS IN ENVIRONMENTAL MEDIA: A SUMMARY OF FIELD AND LABORATORY STUDIES aquifer material, groundwater, aerobic sediment, or surface water and 2) to be incubated under aerobic conditions. Studies where the environmental material was seeded with microorganisms from other sources (e.g.

sewage, anaerobic File Size: KB. Reinhard M, Hopkins GD, Orwin E, Shang S, LeBron CA. In situ demonstration of anaerobic BTEX biodegradation through controlled-release experiments. In: International In Situ and On-Site Bioreclamation Symposium, San Diego, CA, April, pp.

RC (Final) Abstract: IAEA/INIS-Abstract Exit; Abstract (1) Book: Hinchee RE. Laboratory microcosm and in situ column experiments were conducted in a petroleum-contaminated aquifer undergoing intrinsic biodegradation to (1) document that anaerobic biodegradation of benzene, toluene, ethylbenzene, and xylene (BTEX) isomers occurred, (2) determine the rate and pattern of BTEX biodegradation, and (3) compare measured decay.

aerobic BTEX biodegradation. A microcosm experiment was conducted to investigate the effect of ethanol on the biodegradation of BTEX. Microcosms were set up with Borden aquifer material and groundwater in which oxygen and nutrients were not limited.

These microcosms contained BTEX in combination with a range of ethanol concentrations. Abstract. In situ biodegradation of benzene, toluene, and xylenes in a petroleum hydrocarbon contaminated aquifer near Fairbanks, Alaska was assessed using carbon and hydrogen compound specific isotope analysis (CSIA) of benzene and toluene and analysis of signature metabolites for toluene (benzylsuccinate) and xylenes (methylbenzylsuccinates).Cited by:.

Anaerobic biodegradation of BTEX by original bacterial communities from an underground gas storage aquifer.

Berlendis S(1), Lascourreges JF, Schraauwers B, Sivadon P, Magot M. Author information: (1)Equipe Environnement et Microbiologie, IPREM UMR Universite de Pau et des Pays de l'Adour, PAU, by: In contaminated environments, BTEX biodegradation has been demonstrated under both aerobic and anaerobic conditions (Dagley,Widdel and Rabus, ).

Compared to aerobic biodegradation, the turnover of BTEX under anaerobic conditions exhibits a more limited catabolic range and slower degradation kinetics (Ruiz-Aguilar et al., ).Cited by: Dou J., Liu X., Hu ate interactions during anaerobic biodegradation of BTEX by the mixed cultures under nitrate reducing conditions Journal of Hazardous Materials, (), pp./tCited by: