Dissimilatory Sulfate Reduction Under High Pressure by Desulfovibrio alaskensis G20.

ABSTRACT: Biosouring results from production of H₂S by sulfate-reducing microorganisms (SRMs) in oil reservoirs. H₂S is toxic, corrosive, and explosive, and as such, represents a significant threat to personnel, production facilities, and transportation pipelines. Since typical oil reservoir pressures can range from 10 to 50 MPa, understanding the role that pressure plays in SRM metabolism is important to improving souring containment strategies. To explore the impact of pressure, we grew an oil-field SRM isolate, Desulfovibrio alaskensis G20, under a range of pressures (0.1-14 MPa) at 30°C. The observed microbial growth rate was an inverse function of pressure with an associated slight reduction in sulfate and lactate consumption rate. Competitive fitness experiments wi

SUBMITTER: Williamson AJ 

PROVIDER: S-EPMC6052904 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature