Show simple item record Mitchell, Andrew Charles Phillips, Adrienne J. Hiebert, Randy Gerlach, Robin Spangler, Lee H. Cunninghamam, Alfred B. 2010-12-03T15:08:47Z 2010-12-03T15:08:47Z 2009-01
dc.identifier.citation Mitchell , A C , Phillips , A J , Hiebert , R , Gerlach , R , Spangler , L H & Cunninghamam , A B 2009 , ' Biofilm enhanced geologic sequestration of supercritical CO2 ' International Journal of Greenhouse Gas Control , vol 3 , no. 1 , pp. 90-99 . DOI: 10.1016/j.ijggc.2008.05.002 en
dc.identifier.issn 1750-5836
dc.identifier.other PURE: 154574
dc.identifier.other PURE UUID: 05dfed2d-bc49-4c82-b85e-10632d030f4a
dc.identifier.other dspace: 2160/5981
dc.identifier.other DSpace_20121128.csv: row: 3810
dc.identifier.other RAD: 660
dc.identifier.other RAD_Outputs_All_ID_Import_20121105.csv: row: 371
dc.identifier.other Scopus: 58149158159
dc.identifier.uri en
dc.description Mitchell, A. C., Phillips, A., Heibert, R., Gerlach, R., Cunningham, A., Spangler, L. (2009). Biofilm enhanced geologic sequestration of supercritical CO2. International Journal of Greenhouse Gas Control, 3 (1), 90-99. A Mitchell came to AU in 2009. Sponsorship: Zero Emissions Research Technology (ZERT) fund, from the U.S. Department of Energy (DOE), Award No. DE-FC26-04NT42262. en
dc.description.abstract In order to develop subsurface CO2 storage as a viable engineered mechanism to reduce the emission of CO2 into the atmosphere, any potential leakage of injected supercritical CO2 (SC-CO2) from the deep subsurface to the atmosphere must be reduced. Here, we investigate the utility of biofilms, which are microorganism assemblages firmly attached to a surface, as a means of reducing the permeability of deep subsurface porous geological matrices under high pressure and in the presence of SC-CO2, using a unique high pressure (8.9 MPa), moderate temperature (32 °C) flow reactor containing 40 millidarcy Berea sandstone cores. The flow reactor containing the sandstone core was inoculated with the biofilm forming organism Shewanella fridgidimarina. Electron microscopy of the rock core revealed substantial biofilm growth and accumulation under high-pressure conditions in the rock pore space which caused >95% reduction in core permeability. Permeability increased only slightly in response to SC-CO2 challenges of up to 71 h and starvation for up to 363 h in length. Viable population assays of microorganisms in the effluent indicated survival of the cells following SC-CO2 challenges and starvation, although S. fridgidimarina was succeeded by Bacillus mojavensis and Citrobacter sp. which were native in the core. These observations suggest that engineered biofilm barriers may be used to enhance the geologic sequestration of atmospheric CO2. en
dc.format.extent 10 en
dc.language.iso eng
dc.relation.ispartof International Journal of Greenhouse Gas Control en
dc.rights en
dc.subject Carbon sequestration en
dc.subject Microorganism en
dc.subject Supercritical CO2 en
dc.subject Biofilm en
dc.subject Porous media en
dc.subject Permeability en
dc.subject Biomineralization en
dc.subject Climate change en
dc.title Biofilm enhanced geologic sequestration of supercritical CO2 en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.description.version preprint en
dc.contributor.institution Other IGES Research en
dc.contributor.institution Department of Geography and Earth Sciences en
dc.description.status Peer reviewed en

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