2상 혐기성 소화 공정으로부터 바이오가스의 생산과 바이오가스의개질반응을 통한 수소생산 연구 (A Study for Production of Biogas from Two-phase Anaerobic Digestion Process and Hydrogen from Reforming Reaction of Biogas)

서지정보

· 발행기관 : 한국폐기물자원순환학회
· 수록지 정보 : 한국폐기물자원순환학회지 / 37권 / 1호 / 51 ~ 61페이지
· 저자명 : 박민주, 장원준, 정대운

초록

The production and reforming of biogas from food waste (FW) to produce hydrogen was investigated. First, two-phaseanaerobic digestion was used to produce the biogas. The anaerobic digestion process was stable over a 60-day periodand did not accumulate VFAs. Biogas production rates varied from 38.1 L/kg FW to 84.1 ± 1.7 L/kg FW, while CH4 andCO2 concentrations fluctuated between 43 ~ 64% and 36 ~ 56%, respectively. Second, the carbon dioxide reforming (CDR)reaction was performed to reform the biogas, which consisted of a 50/50 mixture of CH4 and CO2. A Ni-Ce0.8Zr0.2O2catalyst was prepared by the co-precipitation method, and CDR was performed at T=600-800oC, CH4: CO2: N2=1 : 1 : 3,and GHSV 480,000 h−1 in a fixed-bed catalytic reactor. The CDR reaction is activated with increasing temperature ofreaction. Especially concentration of H2 was highest as 24.6% at 800oC. The catalyst deactivated with time, whichcorrelated with sintering and carbon deposition on the catalyst.

영어초록

The production and reforming of biogas from food waste (FW) to produce hydrogen was investigated. First, two-phaseanaerobic digestion was used to produce the biogas. The anaerobic digestion process was stable over a 60-day periodand did not accumulate VFAs. Biogas production rates varied from 38.1 L/kg FW to 84.1 ± 1.7 L/kg FW, while CH4 andCO2 concentrations fluctuated between 43 ~ 64% and 36 ~ 56%, respectively. Second, the carbon dioxide reforming (CDR)reaction was performed to reform the biogas, which consisted of a 50/50 mixture of CH4 and CO2. A Ni-Ce0.8Zr0.2O2catalyst was prepared by the co-precipitation method, and CDR was performed at T=600-800oC, CH4: CO2: N2=1 : 1 : 3,and GHSV 480,000 h−1 in a fixed-bed catalytic reactor. The CDR reaction is activated with increasing temperature ofreaction. Especially concentration of H2 was highest as 24.6% at 800oC. The catalyst deactivated with time, whichcorrelated with sintering and carbon deposition on the catalyst.

참고자료

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