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dc.contributor.authorBarnhart, Elliott P.
dc.contributor.authorRuppert, Leslie
dc.contributor.authorHiebert, Randy
dc.contributor.authorSmith, Heidi J.
dc.contributor.authorSchweitzer, Hannah D.
dc.contributor.authorClark, Arthur C.
dc.contributor.authorWeeks, Edwin P.
dc.contributor.authorOrem, William H.
dc.contributor.authorVaronka, Matthew S.
dc.contributor.authorPlatt, George
dc.contributor.authorShelton, Jenna L.
dc.contributor.authorDavis, Katherine J.
dc.contributor.authorHyatt, Robert J.
dc.contributor.authorMcIntosh, Jennifer C.
dc.contributor.authorAshley, Kilian
dc.contributor.authorOno, Shuhei
dc.contributor.authorMartini, Anna M.
dc.contributor.authorHackley, Keith C.
dc.contributor.authorGerlach, Robin
dc.contributor.authorSpangler, Lee
dc.contributor.authorPhillips, Adrienne J.
dc.contributor.authorBarry, Mark
dc.contributor.authorCunningham, Alfred B.
dc.contributor.authorFields, Matthew W.
dc.identifier.citationBarnhart, E. P., Ruppert, L. F., Hiebert, R., Smith, H. J., Schweitzer, H. D., Clark, A. C., ... & Fields, M. W. (2022). In Situ Enhancement and Isotopic Labeling of Biogenic Coalbed Methane. Environmental Science & Technology, 56(5), 3225-3233.en_US
dc.description.abstractSubsurface microbial (biogenic) methane production is an important part of the global carbon cycle that has resulted in natural gas accumulations in many coal beds worldwide. Laboratory studies suggest that complex carbon-containing nutrients (e.g., yeast or algae extract) can stimulate methane production, yet the effectiveness of these nutrients within coal beds is unknown. Here, we use downhole monitoring methods in combination with deuterated water (D2O) and a 200-liter injection of 0.1% yeast extract (YE) to stimulate and isotopically label newly generated methane. A total dissolved gas pressure sensor enabled real time gas measurements (641 days preinjection and for 478 days postinjection). Downhole samples, collected with subsurface environmental samplers, indicate that methane increased 132% above preinjection levels based on isotopic labeling from D2O, 108% based on pressure readings, and 183% based on methane measurements 266 days postinjection. Demonstrating that YE enhances biogenic coalbed methane production in situ using multiple novel measurement methods has immediate implications for other field-scale biogenic methane investigations, including in situ methods to detect and track microbial activities related to the methanogenic turnover of recalcitrant carbon in the subsurface.en_US
dc.publisherAmerican Chemical Societyen_US
dc.titleIn Situ Enhancement and Isotopic Labeling of Biogenic Coalbed Methaneen_US
mus.citation.journaltitleEnvironmental Science & Technologyen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentMicrobiology & Cell Biology.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US

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