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COD/sulfate ratio does not affect the methane yield and microbial diversity in anaerobic digesters
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Cetecioglu, Zeynep, Dolfing, Jan, Taylor, Jessica, Purdy, Kevin J. and Eyice, Özge (2019) COD/sulfate ratio does not affect the methane yield and microbial diversity in anaerobic digesters. Water Research, 155 . pp. 444-454. doi:10.1016/j.watres.2019.02.038 ISSN 0043-1354.
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WRAP-COD-sulfate-ratio-affect-methane-micorbial-diversity-digesters-Purdy-2019.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1596Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.watres.2019.02.038
Abstract
Anaerobic digestion of organic matter is the major route of biomethane production. However, in the presence of sulfate, sulfate-reducing bacteria (SRB) typically outcompete methanogens, which may reduce or even preclude methane production from sulfate-containing wastewaters. Although sulfate-reduction and methanogenesis can occur simultaneously, our limited understanding of the microbiology of anaerobic digesters treating sulfate-containing wastewaters constrains improvements in the production of methane from these systems. This study tested the effects of carbon sources and chemical oxygen demand-to-sulfate ratio () on the diversity and interactions of SRB and methanogens in an anaerobic digester treating a high-sulfate waste stream. Overall, the data showed that sulfate removal and methane generation occurred in varying efficiencies and the carbon source had limited effect on the methane yield. Importantly, the results demonstrated that methanogenic and SRB diversities were only affected by the carbon source and not by the ratio.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
Journal or Publication Title: | Water Research | ||||||||
Publisher: | Elsevier Science Ltd. | ||||||||
ISSN: | 0043-1354 | ||||||||
Official Date: | 15 May 2019 | ||||||||
Dates: |
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Volume: | 155 | ||||||||
Page Range: | pp. 444-454 | ||||||||
DOI: | 10.1016/j.watres.2019.02.038 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 20 March 2019 | ||||||||
Date of first compliant Open Access: | 4 March 2020 |
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