Effect of sulphate concentration on the community structure and activity of sulphate reducing bacteria

 

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dc.contributor.author Oyekola, Oluwaseun O
dc.contributor.author van Hille, Rob
dc.contributor.author Harrison, Susan T L
dc.date.accessioned 2016-08-19T11:34:18Z
dc.date.available 2016-08-19T11:34:18Z
dc.date.issued 2007
dc.identifier http://dx.doi.org/10.4028/www.scientific.net/AMR.20-21.513
dc.identifier.citation Oyekola, O. O., van Hille, R. P., & Harrison, S. T. (2007). Effect of sulphate concentration on the community structure and activity of sulphate reducing bacteria. In Advanced Materials Research (Vol. 20, pp. 513-515). Trans Tech Publications. en_ZA
dc.identifier.issn 1022-6680 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/21359
dc.description.abstract This study investigated the effect of sulphate concentration and residence time on the performance of anaerobic sulphate reduction by a mixed sulphate reducing bacteria (SRB) culture using lactate as the sole carbon source and electron donor. The process perforrnance is related to the population structure of the microbial consortia and dominant metabolic reactions. Laboratory scale chemostat cultures at different residence times (1-4 d) and sulphate concentrations (1.0-10.0 glL) were employed. Lactate oxidation was prevalent at feed sulphate concentrations of 1.0 to 5.0 glL. A colresponding increase in the volumetric sulphate reduction rate with increasing volumetric loading rate was also observed at this range. However, at the higher feed sulphate concentration range (10.0-15.0 glL), sulphate inhibition, lactate fermentation and an increased microbial diversity were evident. At each feed concentration of sulphate in the range 5.0 to 15.0 glL, varying dilution rates resulted in significant shifts in dominant metabolic reactions. Sulphate concentration and residence time have significant effects on both the structure of the microbial population and kinetics of biological sulphate reduction. en_ZA
dc.language eng en_ZA
dc.publisher Trans Tech Publications en_ZA
dc.source Advanced Materials Research en_ZA
dc.source.uri http://www.scientific.net/AMR
dc.subject.other Acid mine drainage
dc.subject.other Biological sulphate reduction
dc.subject.other Kinetics
dc.subject.other Population dynamic
dc.title Effect of sulphate concentration on the community structure and activity of sulphate reducing bacteria en_ZA
dc.type Journal Article en_ZA
dc.date.updated 2016-08-19T08:48:17Z
uct.type.publication Research en_ZA
uct.type.resource Article en_ZA
dc.publisher.institution University of Cape Town
uct.type.filetype Text
uct.type.filetype Image


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