Biogas is a gaseous mixture produced from the microbial digestion of organic materials in the absence of oxygen. Raw biogas, depending upon organic materials, digestion time and process conditions, contains about 45 ~ 75% methane, 30 ~ 50% carbon dioxide, 0.1% hydrogen sulfide gas, and a fractional percentage of water vapor. To achieve the standard composition of the biogas, treatment techniques like absorption or membrane separation are performed for the resourcing of biogas. In this paper, the experiments are performed using biogas produced in an environmental digestion facility for food waste. The membrane module was imported from overseas, its membrane process has achieved up to 98% of the methane and 99% of the carbon dioxide separated, and it has manufactured and stored pressurized carbon dioxide. The effects of the feed pressures on the separation of CO2-CH4 by the membrane are investigated. A chelate was utilized to purify the methane from the H2S concentration of 0.1%.

I. 서 론
 II. 실 험
  1. 실험재료
  2. 실험장치
  3. 장치의 운전
 III. 결과 및 고찰
  1. 바이오가스 발생
  2. 바이오가스 전처리
  3. 수분제거
  4. 분리막에 의한 메탄의 분리 성능
  5. 분리막에 의한 이산화탄소의 분리성능
  6. 이산화탄소 회수
 IV. 결 론
 References

• 권오철(한영가스기공(주) 부설연구소, HanYoung Gas Technology, Research Center) | Oh Chul Kwon
• 박영규(대진대학교 에너지환경공학부 화학에너지공학 전공, 푸른들, Department of Energy Engineering, Daejin University, Prundle) | Young Gyu Park Corresponding author