Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/5344
Title: Effect of culture conditions on the competitive interaction between lactate oxidizers and fermenters in a biological sulfate reduction system
Authors: Oyekola, OO 
Harrison, Susan TL 
van Hille, RP 
Keywords: Acid mine drainage;Biological sulfate reduction;Fermentation;Oxidation;Kinetics;Stoichiometry
Issue Date: 2012
Publisher: Elsevier
Abstract: Kinetic constants (μmax and Ks) describing the predominance of lactate oxidation and fermentation were determined in chemostat cultures. The kinetics of sulfate reduction and lactate utilization were determined from 0.5 to 5 d residence times at feed sulfate concentrations of 1.0–10.0 g l−1. The kinetics of lactate fermentation in the absence of sulfate were investigated at residence times of 0.5–5 d. The lactate oxidizers (LO) were characterized by a μmax of 0.2 h−1 and Ks value of 0.6 g l−1 compared with a μmax of 0.3 h−1 and Ks of 3.3 g l−1 for the lactate fermenters (LF). Using mathematical models, it was shown that LO competed more effectively for lactate at low lactate concentrations (⩽5 g l−1) and high sulfide concentrations (0.5 g l−1). Lactate fermenters outcompeted the oxidizers under conditions of excess lactate (>5 g l−1) and low sulfide (0.014–0.088 g l−1).
URI: http://dx.doi.org/10.1016/j.biortech.2011.11.052
http://hdl.handle.net/11189/5344
Appears in Collections:Eng - Journal articles (DHET subsidised)
Dr. Oluwaseun (Seun) Oyekola

Files in This Item:
File Description SizeFormat 
Oyekola_OO_Harrison_STL_van Hille_RP_Eng_2012.pdfMain Article308.87 kBAdobe PDFView/Open
Show full item record

Page view(s)

36
Last Week
0
Last month
0
checked on Jun 16, 2019

Download(s)

17
checked on Jun 16, 2019

Google ScholarTM

Check


This item is licensed under a Creative Commons License Creative Commons