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Full-Text Articles in Physical Sciences and Mathematics
Denitrification By Sulfur-Oxidizing Bacteria In A Eutrophic Lake, Amy J. Burgin, Stephen K. Hamilton, Stuart E. Jones, Jay T. Lennon
Denitrification By Sulfur-Oxidizing Bacteria In A Eutrophic Lake, Amy J. Burgin, Stephen K. Hamilton, Stuart E. Jones, Jay T. Lennon
School of Natural Resources: Faculty Publications
Understanding the mechanistic controls of microbial denitrification is of central importance to both environmental microbiology and ecosystem ecology. Loss of nitrate (NO3 −) is often attributed to carbon-driven (heterotrophic) denitrification. However, denitrification can also be coupled to sulfur (S) oxidation by chemolithoautotrophic bacteria. In the present study, we used an in situ stable isotope (15NO3 −) tracer addition in combination with molecular approaches to understand the contribution of sulfur-oxidizing bacteria to the reduction of NO3 − in a eutrophic lake. Samples were incubated across a total dissolved sulfide (H2S) gradient (2 to …
Accidental Releases Of Sour Gas From Wells And Collection Pipelines In The Overthrust Belt: Calculating And Assessing Potential Health And Environmental Risks, D. W. Layton, R. T. Cederwall, Y. E. Ricker, J. H. Shinn, K. D. O'Banion
Accidental Releases Of Sour Gas From Wells And Collection Pipelines In The Overthrust Belt: Calculating And Assessing Potential Health And Environmental Risks, D. W. Layton, R. T. Cederwall, Y. E. Ricker, J. H. Shinn, K. D. O'Banion
All U.S. Government Documents (Utah Regional Depository)
Parts of the Overthrust Belt of western Wyoming and adjoining areas in Utah and Idaho contain geologic formations with significant accumulations of oil and natural gas. Some of these formations, though, yield gas that is contaminated with toxic hydrogen sulfide. As a consequence, the development of these so-called sour-gas reservoirs requires special safety procedures and technologies in order to prevent accidental releases of gas to the atmosphere that could cause adverse occupational and public health effects. To improve the analysis and assessment of wells and collection pipelines completed on lands leased from the Federal Government, the Minerals Management Service, Onshore …