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dc.contributor.authorDavis, Katherine J.
dc.contributor.authorBarnhart, Elliott P.
dc.contributor.authorFields, Matthew W.
dc.contributor.authorGerlach, Robin
dc.identifier.citationDavis, Katherine J., Elliott P. Barnhart, Matthew W. Fields, and Robin Gerlach. “Biogenic Coal-to-Methane Conversion Efficiency Decreases after Repeated Organic Amendment.” Energy & Fuels 32, no. 3 (January 30, 2018): 2916–2925. doi:10.1021/acs.energyfuels.7b03426.en_US
dc.description.abstractAddition of organic amendments to coal-containing systems can increase the rate and extent of biogenic methane production for 60−80 days before production slows or stops. Understanding the effect of repeated amendment additions on the rate and extent of enhanced coal-dependent methane production is important if biological coal-to-methane conversion is to be enhanced on a commercial scale. Microalgal biomass was added at a concentration of 0.1 g/L to microcosms with and without coal on days 0, 76, and 117. Rates of methane production were enhanced after the initial amendment but coal-containing treatments produced successively decreasing amounts of methane with each amendment. During the first amendment period, 113% of carbon added as amendment was recovered as methane, whereas in the second and third amendment periods, 39% and 32% of carbon added as amendment was recovered as methane, respectively. Additionally, algae-amended coal treatments produced ∼38% more methane than unamended coal treatments and ∼180% more methane than amended coal-free treatments after one amendment. However, a second amendment addition resulted in only an ∼25% increase in methane production for coal versus noncoal treatments and a third amendment addition resulted in similar methane production in both coal and noncoal treatments. Successive amendment additions appeared to result in a shift from coal-to-methane conversion to amendment-to-methane conversion. The reported results indicate that a better understanding is needed of the potential impacts and efficiencies of repeated stimulation for enhanced coal-to-methane conversion.en_US
dc.rightsThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).en_US
dc.titleBiogenic coal-to-methane conversion efficiency decreases after repeated organic amendment stimulationen_US
mus.citation.journaltitleEnergy & Fuelsen_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.contributor.orcidFields, Matthew W.|0000-0001-9053-1849en_US
mus.contributor.orcidDavis, Katherine J.|0000-0002-0562-7035en_US

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