Gas phase H(2)S product recovery in a packed bed bioreactor with immobilized sulfate-reducing bacteria.
An N(2) strip gas was used in a packed bed sulfate-reducing bioreactor to recover the dissolved sulfide product and improve sulfate conversion. The highest volumetric productivity obtained was 261 mol H(2)S m(-3) d(-1). Lowering the initial pH of the medium from 7 to 6 increased the H(2)S content of the strip gas from 3.6 to 5.8 mol%. The ratio of strip gas to liquid flow rates (G/L) was found be to a suitable basis for scaling the process. Calculations indicated that modest G/L values (<10(2)) were required to recover the residual dissolved sulfide in a downstream stripping column.
McMahon
Matthew J L
MJ
Department of Chemical Engineering, Queen's University, Kingston, ON, Canada.
Daugulis
Andrew J
AJ
D001673:Biodegradation, Environmental; D019149:Bioreactors; D018914:Cells, Immobilized; D005285:Fermentation; D006862:Hydrogen Sulfide / Q000378:metabolism*; D007218:Industrial Microbiology; D007220:Industrial Waste; D008433:Mathematics; D013440:Sulfides / Q000378:metabolism*; D016999:Sulfur-Reducing Bacteria / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*
D007220:Industrial Waste; D013440:Sulfides; D006862:Hydrogen Sulfide