Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 380444
Title Citric acid wastewater as electron donor for biological sulfate reduction
Author(s) Stams, A.J.M.; Huisman, J.; Garcia Encina, P.A.; Muyzer, G.
Source Applied Microbiology and Biotechnology 83 (2009)5. - ISSN 0175-7598 - p. 957 - 963.
DOI https://doi.org/10.1007/s00253-009-1995-7
Department(s) Microbiology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2009
Keyword(s) sp-nov. - lactosphaera-pasteurii - ruminococcus-palustris - citrate metabolism - reducing bacteria - comb-nov - gen-nov - reactor - veillonella - reclassification
Abstract Citrate-containing wastewater is used as electron donor for sulfate reduction in a biological treatment plant for the removal of sulfate. The pathway of citrate conversion coupled to sulfate reduction and the microorganisms involved were investigated. Citrate was not a direct electron donor for the sulfate-reducing bacteria. Instead, citrate was fermented to mainly acetate and formate. These fermentation products served as electron donors for the sulfate-reducing bacteria. Sulfate reduction activities of the reactor biomass with acetate and formate were sufficiently high to explain the sulfate reduction rates that are required for the process. Two citrate-fermenting bacteria were isolated. Strain R210 was closest related to Trichococcus pasteurii (99.5% ribosomal RNA (rRNA) gene sequence similarity). The closest relative of strain S101 was Veillonella montepellierensis with an rRNA gene sequence similarity of 96.7%. Both strains had a complementary substrate range
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