| 학회 |
한국화학공학회 |
| 학술대회 |
2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 |
28권 1호, p.838 |
| 발표분야 |
[주제 4] 탄소중립(CCUS) |
| 제목 |
Bio-upgrading of anaerobic digestion effluent CO2 into CH4 using a microbial electrosynthesis |
| 초록 |
Biogas upgrading of anaerobic digestion (AD) effluent gas has gained great attention in recent years as a natural gas substitute and sustainable organic waste reuse. The AD effluent consists of CO2 and balanced CH4. In this study, biomethane upgrading using microbial electrosynthesis (MES) system was examined with synthetic CO2 gas and AD effluent gas sample. The fabricated MESs was operated with mixed anaerobic culture as cathodic biocatalysts. An applied potential of -1.0V (vs. Ag/AgCl) to the cathode provides sufficient reducing power to convert CO2 to CH4. The morphological analyses and next-generation sequencing results support that the cathode attached methanogens play a key role in the bio-upgrading of methane in the MES system. The biocathode produced methane at a maximum rate of 10.55L CH4/ m2 cathode/ day at −1.0 V (versus Ag/AgCl). The bio-upgrading methane production in real AD biogas samples showed 8.8L CH4/ m2 cathode/ day. These results suggest that microbial electrosynthesis improve methane content of AD plant and simultaneous CO2 valorization. |
| 저자 |
김민수1, 리수웨이1, 송영은2, 이동열3, 김중래1
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| 소속 |
1부산대, 2Berkeley National Lab, 3GS건설 |
| 키워드 |
생물화공(Biochemical Engineering) |
| E-Mail |
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| 원문파일 |
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