S-Space College of Agriculture and Life Sciences (농업생명과학대학) Dept. of Forest Sciences (산림과학부) Theses (Ph.D. / Sc.D._산림과학부)
Peracetic acid treatment of lignins for selective production of valuable chemiclas
리그닌 유래 유용화합물의 선택적 생산을 위한 과초산 처리
- 농업생명과학대학 산림과학부(환경재료과학전공)
- Issue Date
- 서울대학교 대학원
- 학위논문 (박사)-- 서울대학교 대학원 : 농업생명과학대학 산림과학부(환경재료과학전공), 2018. 8. 최인규.
- This study was conducted to investigate the degradation characteristics of lignin depending on the peracetic acid (PAA) and hydrogen peroxide (HP) concentrations, and to produce the low-molecular weight lignins by controlling the reaction conditions. In addition, reaction conditions for producing the definite products from lignin were investigated. Fractionation of the PAA-treated lignin depending on their molecular weight range was carried out by using open-column with selecting several solvents.
Acetic acid (AA) and HP were mixed at a ratio of 4:1, 1.5:1, 1:1, 1:1.5, and 1:5 (v/v) for preparing the PAA solution. After PAA treatment, the highest solid degradation rates were obtained as 29.0% and 65.3% at 1:1.5 (v/v) for alkali and kraft lignin, respectively. However, degradation characteristics of two lignins were different
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