Removal of hydrogen sulfide in biogas from wastewater treatment sludge by real-scale biotrickling filtration desulfurization process

Abstract The biological removal of hydrogen sulfide in biogas is an increasingly adopted alternative to conventional physicochemical processes because its economic and environmental benefits. In this study, a real-scale biotrickling filtration (BTF) process packed with polypropylene carrier was used investigate the high concentrations H2S from anaerobic digester. results show that entirely removed under different inlet 2,923 4,400 ppmv, elimination capacity filter achieved about 52.71 g H2S/m3/h). addition, efficiency found be independent concentration. accomplished by BTF SOB (Acidithiobacillus thiooxidans), which active acidic environment (pH 1.5–3.5). Consequently, allowed potential use recovery elemental sulfur resources simultaneously.