화학공학소재연구정보센터
Biotechnology and Bioengineering, Vol.98, No.1, 91-100, 2007
Anaerobic methanethiol degradation in upflow anaerobic sludge bed reactors at high salinity (>= 0.5 M Na+)
The feasibility of anaerobic methanethiol (MT) degradation at elevated sodium concentrations was investigated in a mesophilic (30 degrees C lab-scale upflow anaerobic sludge bed (UASB) reactor, inoculated with estuarine sediment originating from the Wadden Sea (The Netherlands). NIT 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 NaHCO3) and between pH 7.3 and 8.4. Batch experiments revealed that inhibition of NIT degradation started at sodium (both NaCl and NaHCO3) concentrations exceeding 0.8 M. Sulfide inhibited MT degradation already around 3 mM (pH 8.3).