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CO₂ 고부가화를 위한 로도박터 스페로이데스를 활용한 미생물 전기합성 최적화 연구
김희수(Hui Su Kim),정휘종(Hwi Jong Jung),김단비(Danbee Kim),이상민(Samgmin Lee),이지예(Jiye Lee),이진석(Jin-Suk Lee),문명훈(Myounghoon Moon),고창현(Chang Hyun Ko),이수연(Soo Youn Lee) 한국신재생에너지학회 2023 신재생에너지 Vol.19 No.4
Emitted CO₂ is an attractive material for microbial electrochemical CO₂ reduction. Microbial electrochemical CO₂ reduction (i.e., microbial electrosynthesis, MES) using biocatalysts has advantages compared to conventional CO₂ reduction using electrocatalysts. However, MES has several challenges, including electrode performance, biocatalysts, and reactor optimization. In this study, an MES system was investigated for optimizing reactor types, counter electrode materials, and CO₂-converting microorganisms to achieve effective CO₂ upcycling. In autotrophic cultivation (supplementation of CO₂ and H₂), CO₂ consumption of Rhodobacter sphaeroides was observed to be four times higher than that with heterotrophic cultivation (supplementation of succinic acid). The bacterial growth in an MES reactor with a single-chambered shape was two times higher than that with a double chamber (H-type MES reactor). Moreover, a single-chambered MES reactor equipped with titanium mesh as the counter electrode (anode) showed markedly increased current density in the graphite felt as a working electrode (cathode) compared to that with a graphite felt counter electrode (anode). These results demonstrate that the optimized conditions of a single chamber and titanium mesh for the counter electrode have a positive effect on microbial electrochemical CO₂ reduction.
Microbial CO₂ Electrobiorefinery as a Foremost Technology for Net-Zero Bio-Based Production in Korea
Soo Youn Lee(이수연),Sangmin Lee(이상민),Young-Hwan Chu(주영환),Hui Su Kim(김희수),Yu Rim Lee(이유림),Hwi Jong Jung(정휘종),Danbee Kim(김단비),Myunghoon Moon(문명훈),Gwon Woo Park(박권우) 한국신재생에너지학회 2023 한국신재생에너지학회 학술대회논문집 Vol.2023 No.6