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고압 킬레이트 흡수반응에 의한 음식물폐기물 혐기소화가스 중 황화수소의 제거와 경제성 평가 KCI 등재

Removal of Hydrogen Sulfide by Ferric Chelate Reaction of Food Waste Anaerobic Digestion Gas under High Pressure and Economic Assessment

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한국폐기물자원순환학회지 (Journal of Korea Society of Waste Management)
한국폐기물자원순환학회 (Korea Society Of Waste Management)
초록

Biogas has been used to remove water content and hydrogen sulfide (H2S). Removing water requires a low temperature process; thus, our study investigated removing H2S under high pressure and low temperature. Several experiments were conducted to investigate removal of H2S from a biogas stream by optimizing chemical absorption and the chemical reaction with a Fe/EDTA solution. The roles of Fe/EDTA were studied to enhance removal efficiency of H2S due to oxidization by Fe+3/EDTA. The objective of this study was to explore the feasibility of enhancing toxic gas treatment in a biogas facility. A biogas purification strategy affords many advantages. For example, the process can be performed under mild environmental conditions and at low temperature, and it removes H2S selectively. As the Fe-EDTA concentration increased, the H2S conversion rate increased because the Fe-EDTA complex was highly stable. The optimal pH to stabilize the chemical complex during oxidation of H2S was 9.0.

저자
  • 권오철(한영가스기공(주)) | Oh Chul Kwon (HanYoung Gas Technology)
  • 박영규(대진대학교 에너지환경공학부 화학공학과) | Young Gyu Park (Department of Chemical Engineering, Daejin University) Corresponding author