Influence of electron donor on the minimum sulfate concentration required for sulfate reduction in a petroleum hydrocarbon-contaminated aquifer
Article Abstract:
Abundant electron donor availability enabled methanogenc bacteria (MB) to sequester a portion of the electron flow in a petroleum hydrocarbon-dominated aquifer, even in the presence of sufficient concentrations of sulfate to enable sulfate reduction. Limited electron donor availability, on the other hand, allowed sulfate-reducing bacteria (SRB) to outcompete MB for available substrate at a lower concentration of sulfate than when electron donor was abundant. Thus, fluctuations in electron donor availability influenced the competition between SRB and MB for control of electron flow.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Atrazine mineralization potential of alluvial-aquifer sediments under aerobic conditions
Article Abstract:
Atrazine mineralization potential under aerobic conditions in alluvial-aquifer sediments is dependent on the structure of the atrazine compound, according to a recent study conducted in an Ohio flood plain. Less than .1% of an atrazine compound with a ring structure was mineralized in 23 days. In contrast, ethyl-2-carbon atrazine mineralization, under aerobic conditions, was observed in shallow sediments and was sometimes detectable in deep sediments. Thus, atrazine compounds, which are often used in herbicides, may pass through to the water table if the structures are ringed.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
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Anaerobic mineralization of vinyl chloride in Fe(III)-reducing, aquifer sediments
Article Abstract:
Vinyl chloride is a highly toxic and carcinogenic compound most often found in aquifer systems. Biodegradation of vinyl chloride by indigenous microorganisms has been proposed for contaminated, anaerobic aquifer systems. The approach requires iron(III)-reducing conditions to promote anaerobic oxidation of the compound. This process of rapid microbial degradation is also known as anaerobic mineralization.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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- Abstracts: Anaerobic bioremediation of benzene under sulfate-reducing conditions in a petroleum-contaminated aquifer. Study of thermally immobilized Cu in analogue minerals of contaminated soils
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