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Effect of sulfide r...
Effect of sulfide removal on sulfate reduction at pH 5 in a hydrogen fed gas-lift bioreactor.
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- Bijmans, Martijn F M (författare)
- Wageningen University and Research Centre, Wageningen,The Netherlands
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- Dopson, Mark (författare)
- Umeå universitet,Institutionen för molekylärbiologi (Teknisk-naturvetenskaplig fakultet),Dopson,Umeå University
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- Ennin, Frederick (författare)
- Wageningen University and Research Centre, Wageningen,The Netherlands
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- Lens, Piet N L (författare)
- Wageningen University and Research Centre, Wageningen,The Netherlands
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- Buisman, Cees J N (författare)
- Wageningen University and Research Centre, Wageningen,The Netherlands
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(creator_code:org_t)
- Journal of Microbiology and Biotechnology, 2008
- 2008
- Engelska.
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Ingår i: Journal of Microbiology and Biotechnology. - : Journal of Microbiology and Biotechnology. - 1017-7825 .- 1738-8872. ; 18:11, s. 1809-1818
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.4...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Biotechnological treatment of sulfate- and metal-ionscontaining acidic wastewaters from mining and metallurgical activities utilizes sulfate-reducing bacteria to produce sulfide that can subsequently precipitate metal ions. Reducing sulfate at a low pH has several advantages above neutrophilic sulfate reduction. This study describes the effect of sulfide removal on the reactor performance and microbial community in a high-rate sulfidogenic gas-lift bioreactor fed with hydrogen at a controlled internal pH of 5. Under sulfide removal conditions, 99% of the sulfate was converted at a hydraulic retention time of 24 h, reaching a volumetric activity as high as 51 mmol sulfate/l/d. Under nonsulfide removal conditions, <25% of the sulfate was converted at a hydraulic retention time of 24 h reaching volumetric activities of <13mmol sulfate/l/d. The absence of sulfide removal at a hydraulic retention time of 24 h resulted in an average H2S concentration of 18.2 mM (584 mg S/l). The incomplete sulfate removal was probably due to sulfide inhibition. Molecular phylogenetic analysis identified 11 separate 16S rRNA bands under sulfide stripping conditions, whereas under nonsulfide removal conditions only 4 separate 16S rRNA bands were found. This shows that a less diverse population was found in the presence of a high sulfide concentration.
Ämnesord
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Nyckelord
- Mikrobiologi
- Microbiology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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