원문정보
Dilute Acid Pretreatment of Woody Hemicellulose Using a Percolation Process
초록
영어
The dilute-acid pretreatment/hydrolysis of hemicellulose in oak wood using a percolation reactor was investigated. The experimental conditions ranged 160∼180℃ and 0.05∼0.2 wt.% sulfuric acid. XMG(xylan+mannan+galactan) recovery was higher when sulfuric acid was used as leaching solvent than water. Also it was important for high XMG recovery to keep leaching temperature higher after reaction. XMG recovery was decreased as the size of wood chips was increased. At an optimum condition (reaction condition= 170℃, 0.1% sulfuric acid, 1ml/min, 10min, leaching condition=0.1% sulfuric acid, 2mL/min, 20 min), the product yield and the sugar concentration were about 92% and 2.7%, respectively.
목차
실험장치 및 방법
시료의 전처리
수분함량 측정
초기 당함량 결정
2차 가수분해
반응후 고체 잔재물에 남아있는 XMG
HPLC 분석
반응장치 및 공정흐름
결과 및 토론
침지(soaking) 시간에 따른 영향
반응시간의 영향
침출 방법에 따른 영향
침출수의 유속에 따른 영향
반응온도의 영향
산 농도의 영향
시료 크기의 영향
헤미셀룰로오스 회수율
요약
감사
참고문헌