Please use this identifier to cite or link to this item:
Title: Effect of sulphate concentration on the community structure and activity of sulphate reducing bacteria
Authors: Oyekola, Oluwaseun 
Van Hille, R 
Harrison, Susan TL 
Keywords: Acid mine drainage;Biological sulphate reduction;Kinetics;Population dynamics;Sulphate reducing bacteria (SRB)
Issue Date: 2007
Publisher: Tech Publications
Source: O. O. Oyekola, R. P. van Hille, S. T.L. Harrison, "Effect of Sulphate Concentration on the Community Structure and Activity of Sulphate Reducing Bacteria", Advanced Materials Research, Vols. 20-21, pp. 513-515, 2007
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 performance 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 g/L) were employed. Lactate oxidation was prevalent at feed sulphate concentrations of 1.0 to 5.0 g/L. A corresponding 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 g/L), 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 g/L, 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.
Appears in Collections:Eng - Journal articles (DHET subsidised)

Files in This Item:
File Description SizeFormat 
Oyekola_OO_Van Hille_R_Harrison_STL_Eng_2007.pdfMain Article353 kBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Nov 24, 2020


checked on Nov 24, 2020

Google ScholarTM


This item is licensed under a Creative Commons License Creative Commons