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Sulfate reduction at pH 5 in a high-rate membrane bioreactor: reactor performance and microbial community analyses.
Wageningen University and Research Centre, Wageningen,The Netherlands.
Umeå University.ORCID iD: 0000-0002-9622-3318
Wageningen University and Research Centre, Wageningen,The Netherlands.
Wageningen University and Research Centre, Wageningen,The Netherlands.
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2009 (English)In: Journal of Microbiology and Biotechnology, ISSN 1017-7825, Vol. 19, no 7, 698-708 p.Article in journal (Refereed) Published
Abstract [en]

High rate sulfate reduction under acidic conditions opens possibilities for new process flow sheets that allow the selective recovery of metals from mining and metallurgical waste and process water. However, knowledge about high-rate sulfate reduction under acidic conditions is limited. This paper investigates sulfate reduction in a membrane bioreactor at a controlled pH of 5. Sulfate and formate were dosed using a pH-auxostat system while formate was converted into hydrogen, which was used for sulfate reduction. Sulfide was removed from the gas phase to prevent sulfide inhibition. This study shows a high-rate sulfate-reducing bioreactor system for the first time at pH 5, with a volumetric activity of 188mmol SO(4)(2-)/I/d and a specific activity of 81mmol SO(4)(2-) volatile suspended. The microbial community at the end of the reactor run consisted of a diverse mixed population including sulfate-reducing bacteria.

Place, publisher, year, edition, pages
2009. Vol. 19, no 7, 698-708 p.
National Category
Microbiology
Research subject
Natural Science, Microbiology
Identifiers
URN: urn:nbn:se:lnu:diva-37339DOI: 10.4014/jmb.0809.502ISI: 000268452800010PubMedID: 19652518OAI: oai:DiVA.org:lnu-37339DiVA: diva2:750380
Available from: 2014-09-29 Created: 2014-09-29 Last updated: 2016-11-30Bibliographically approved

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