A biofiltration system using activated carbon/polyurethane composite as solid support inoculated with Bacillus sp. was developed for treating a gaseous stream containing high concentrations of H2S. The effects of operating condition such as the influent H2S concentration and the empty bed contact time (EBCT) on the removal efficiency of H2S were investigated. The biofilter showed the stable removal efficiencies of over 99 % under the EBCT range from 15 to 60 sec at the 300 ppmv of H2S inlet concentration. When the inlet concentration of H2S was increased, the removal efficiencies decreased, reaching 95 and 74%, at EBCTs of 10 and 7.5 sec, respectively. The maximum elimination capacity in the biofilter packed with activated carbon/polyurethane composite media was 157 g/m3/hr.

• 감상규(제주대학교 토목환경공학전공) | Sang-Kyu Kam
• 강경호(제주대학교 토목환경공학전공) | Kyung-Ho Kang
• 임진관(부경대학교 화학공학부) | Jin-Kwan Lim
• 이민규(부경대학교 화학공학부) | Min-Gyu Lee Corresponding Author