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Anaerobic methanethiol degradation in upflow anaerobic sludge bed reactors at high salinity (≥0.5 M Na + )
Author(s) -
van Leerdam Robin C.,
de Bok Frank A.M.,
Lens Piet N.L.,
Stams Alfons J.M.,
Janssen Albert J.H.
Publication year - 2007
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.21367
Subject(s) - methanethiol , chemistry , anaerobic exercise , degradation (telecommunications) , mesophile , hydrogen sulfide , environmental chemistry , sodium , methane , sulfide , bioreactor , salinity , dimethyl sulfide , nuclear chemistry , sulfur , bacteria , ecology , biology , organic chemistry , physiology , telecommunications , genetics , computer science
The feasibility of anaerobic methanethiol (MT) degradation at elevated sodium concentrations was investigated in a mesophilic (30°C) lab‐scale upflow anaerobic sludge bed (UASB) reactor, inoculated with estuarine sediment originating from the Wadden Sea (The Netherlands). MT was almost completely degraded (>95%) to sulfide, methane and carbon dioxide at volumetric loading rates up to 37 mmol MT·L −1 ·day −1 , 0.5 M sodium (NaCl or NaHCO 3 ) and between pH 7.3 and 8.4. Batch experiments revealed that inhibition of MT degradation started at sodium (both NaCl and NaHCO 3 ) concentrations exceeding 0.8 M. Sulfide inhibited MT degradation already around 3 mM (pH 8.3). Biotechnol. Bioeng. 2007; 98: 91–100. © 2007 Wiley Periodicals, Inc.