Merging biomass and CO₂ utilization; process design and assessment on simultaneous production of lactic acid and formic acid from glycerol and CO₂

• 발행기관: 한국환경에너지공학회
• 저자명: Anil H. Valekar Macchindra G. Chandgude Young Kyu Hwang
• 간행물 정보: 『한국환경에너지공학회 학술대회지』2023년 추계학술발표회, 441~441쪽, 전체 1쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2023.12.07

국문 초록

Biomass and CO₂ conversion is receiving great attention to address climate change and energy crisis. Bio-based lactic acid (LA) appeals industries, however, current technologies suffer from low productivity and waste production. The transfer hydrogenation of glycerol and CO₂ to LA and formic acid (FA) has been proposed as an alternative pathway, but further development and process design are required. This study proposes the integrated process for conversion of glycerol and CO₂ to LA and FA derivatives. A two-pot/two-step transfer hydrogenation was demonstrated to achieve high products yield, catalyst reusability, and product separation. The esterification of lactate and formate salts to corresponding esters utilizing CO₂ was also developed, which reduces H₂SO₄ consumption and K₂SO₄ waste. Techno-economic and life cycle assessments reveal that CO₂ utilization is crucial for high economic benefit and low climate change impact. This study shows integrating biomass and CO₂ could have synergies to design greener process.

키워드

Lactic acid Transfer hydrogenation CO₂ utilization Glycerol Process assessment