Biomass evolution in porous media and its effects on permeability under starvation conditions
dc.contributor.author | Kim, Dong-Shik | en_US |
dc.contributor.author | Fogler, H. Scott | en_US |
dc.date.accessioned | 2006-04-19T13:29:42Z | |
dc.date.available | 2006-04-19T13:29:42Z | |
dc.date.issued | 2000-07-05 | en_US |
dc.identifier.citation | Kim, Dong-Shik; Fogler, H. Scott (2000)."Biomass evolution in porous media and its effects on permeability under starvation conditions." Biotechnology and Bioengineering 69(1): 47-56. <http://hdl.handle.net/2027.42/34337> | en_US |
dc.identifier.issn | 0006-3592 | en_US |
dc.identifier.issn | 1097-0290 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/34337 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=10820330&dopt=citation | en_US |
dc.description.abstract | The purpose of this study was to understand bacteria profile modification and its applications in subsurface biological operations such as biobarrier formation, in situ bioremediation, and microbial-enhanced oil recovery. Biomass accumulation and evolution in porous media were investigated both experimentally and theoretically. To study both nutrient-rich and carbon-source-depleted conditions, Leuconostoc mesenteroides was chosen because of its rapid growth rate and exopolymer production rate. Porous micromodels were used to study the effects of biomass evolution on the permeability of a porous medium. Bacterial starvation was initiated by switching the feed from a nutrient solution to a buffer solution in order to examine biofilm stability under nutrient-poor conditions. Four different evolution patterns were identified during the nutrient-rich and nutrient-depleted conditions used in the micromodel experiments. In phase I, the permeability of the porous micromodel decreased as a result of biomass accumulation in pore bodies and pore throats. In phase II, starvation conditions were initiated. The depletion of nutrient in the phase II resulted in slower growth of the biofilm causing the permeability to reach a minimum as all the remaining nutrients were consumed. In phase III, permeability began to increase due to biofilm sloughing caused by shear stress. In phase IV, shear stress remained below the critical shear stress for sloughing and the biofilm remained stable for long periods of time during starvation. The critical shear stress for biofilm sloughing provided an indication of biofilm strength. Shear removal of biofilms occurred when shear stress exceeded critical shear stress. A network model was used to describe the biofilm formation phenomenon and the existence of a critical shear stress. Simulations were in qualitative agreement with the experimental results, and demonstrate the existence of a critical shear stress. © 2000 John Wiley & Sons, Inc. Biotechnol Bioeng 69: 47–56, 2000. | en_US |
dc.format.extent | 841202 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | John Wiley & Sons, Inc. | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Biochemistry and Biotechnology | en_US |
dc.title | Biomass evolution in porous media and its effects on permeability under starvation conditions | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Biological Chemistry | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbsecondlevel | Mathematics | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Statistics and Numeric Data | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Social Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Chemical Engineering, University of Michigan, The Herbert H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, USA; telephone: (734)-763-1361; fax: (734)-763-0459 | en_US |
dc.contributor.affiliationum | Department of Chemical Engineering, University of Michigan, The Herbert H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, USA; telephone: (734)-763-1361; fax: (734)-763-0459 ; Department of Chemical Engineering, University of Michigan, The Herbert H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, USA; telephone: (734)-763-1361; fax: (734)-763-0459 | en_US |
dc.identifier.pmid | 10820330 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/34337/1/6_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/(SICI)1097-0290(20000705)69:1<47::AID-BIT6>3.0.CO;2-N | en_US |
dc.identifier.source | Biotechnology and Bioengineering | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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