| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 | 19권 1호 |
| 발표분야 | 환경에너지_포스터 |
| 제목 | Improvement of ethanol production from mixed softwood by ionic liquid pretreatment |
| 초록 | Bioethanol is one of the promising alternative fuels that can be biologically produced from a variety of materials. Until now, most bioethanol has been produced from starch-containing feedstocks such as corn, sugarcane, rice, barley, and potato. Recently, there has been an increasing interest in the utilization of non-starch feedstocks such as lignocellulosic materials for the production of bioethanol. Lignocellulosic biomass is composed of cellulose, hemicellulose, and lignin, which are highly recalcitrant to chemicals or enzymes due to their complex arrangement and high degree of polymerization. Ionic liquids (ILs) have been reported as a promising solvent in the cellulose processing due to their interesting properties. In this work, pretreatment of mixed softwood with ionic liquids was examined for downstream saccharification and fermentation. The optimization of pretreatment conditions was considered to provide the cost-effectiveness process. The pretreated samples were hydrolyzed using a cocktail of enzymes, including cellulase, β-glucosidase, and xylanase. Ethanol fermentation was performed by the separate hydrolysis and fermentation. Ionic liquid pretreatment clearly modified the crystalline structure of softwood, facilitating the enzyme accessibility to biomass. Therefore, biomass digestibility significantly enhanced compared to that of untreated sample. Fermentation of hydrolysates resulted in high ethanol production that can be comparable to reported data. This result demonstrated the feasibility to improve bioethanol production of mixed softwood from ionic liquid pretreatment and subsequent bioconversion process. |
| 저자 | TRINH THI PHI LY1, Jae-Won Lee2, Hong-Joo Lee3 |
| 소속 | 1Department of Bioenergy Science and Technology, 2Chonnam National Univ., 3Department of Forest Products and Technology |
| 키워드 | ionic liquid; pretreatment; bioethanol |
