Organic Geochemistry

1992

DOI: 10.1016/0146-6380(92)90016-q

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The migration and degradation of waste organic compounds in groundwater

Geoffrey M. Williams¹,

C. A. M. Ross³

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Cited by 14 publications

(1 citation statement)

References 16 publications

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“…() demonstrated CH 4 oxidation in a landfill leachate plume coupled to

{SO}_{4}^{2 ‐}

reduction. Other studies have documented CH 4 oxidation in contaminated groundwater with evidence linking it to

{SO}_{4}^{2 ‐}

reduction (Williams et al ., ; van Breukelen & Griffioen, ) and denitrification (Smith et al ., ; Bjerg, ; van Breukelen et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Evidence for iron‐mediated anaerobic methane oxidation in a crude oil‐contaminated aquifer

¹

,

²

,

³

et al. 2012

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In a methanogenic crude oil contaminated aquifer near Bemidji, Minnesota, the decrease in dissolved CH(4) concentrations along the groundwater flow path, along with the positive shift in δ(13) C(CH) (4) and negative shift in δ(13) C(DIC) , is indicative of microbially mediated CH(4) oxidation. Calculations of electron acceptor transport across the water table, through diffusion, recharge, and the entrapment and release of gas bubbles, suggest that these processes can account for at most 15% of the observed total reduced carbon oxidation, including CH(4) . In the anaerobic plume, the characteristic Fe(III)-reducing genus Geobacter was the most abundant of the microbial groups tested, and depletion of labile sediment iron is observed over time, confirming that reduced carbon oxidation coupled to iron reduction is an important process. Electron mass balance calculations suggest that organic carbon sources in the aquifer, BTEX and non-volatile dissolved organic carbon, are insufficient to account for the loss in sediment Fe(III), implying that CH(4) oxidation may also be related to Fe(III) reduction. The results support a hypothesis of Fe(III)-mediated CH(4) oxidation in the contaminated aquifer.

“…() demonstrated CH 4 oxidation in a landfill leachate plume coupled to

{SO}_{4}^{2 ‐}

reduction. Other studies have documented CH 4 oxidation in contaminated groundwater with evidence linking it to

{SO}_{4}^{2 ‐}

reduction (Williams et al ., ; van Breukelen & Griffioen, ) and denitrification (Smith et al ., ; Bjerg, ; van Breukelen et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Evidence for iron‐mediated anaerobic methane oxidation in a crude oil‐contaminated aquifer

¹

,

²

,

³

et al. 2012

View full text Add to dashboard Cite

In a methanogenic crude oil contaminated aquifer near Bemidji, Minnesota, the decrease in dissolved CH(4) concentrations along the groundwater flow path, along with the positive shift in δ(13) C(CH) (4) and negative shift in δ(13) C(DIC) , is indicative of microbially mediated CH(4) oxidation. Calculations of electron acceptor transport across the water table, through diffusion, recharge, and the entrapment and release of gas bubbles, suggest that these processes can account for at most 15% of the observed total reduced carbon oxidation, including CH(4) . In the anaerobic plume, the characteristic Fe(III)-reducing genus Geobacter was the most abundant of the microbial groups tested, and depletion of labile sediment iron is observed over time, confirming that reduced carbon oxidation coupled to iron reduction is an important process. Electron mass balance calculations suggest that organic carbon sources in the aquifer, BTEX and non-volatile dissolved organic carbon, are insufficient to account for the loss in sediment Fe(III), implying that CH(4) oxidation may also be related to Fe(III) reduction. The results support a hypothesis of Fe(III)-mediated CH(4) oxidation in the contaminated aquifer.

Natural Attenuation of Aromatic Compounds and Heavy Metals in a Lacustrine Sand Aquifer at Villa Farm, UK

¹

1999

Novel Approaches for Bioremediation of Organic Pollution

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No abstract

Ecology and Biogeochemistry of in Situ Groundwater Bioremediation

¹

,

²

1997

Advances in Microbial Ecology

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No abstract

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