Earticle

초록

영어

Recently, we have studied on the liquefaction of waste newspaper using ethylene glycol (1). From the results, cellulose, lignin and hemicellulose were removed by approximately 10%, 84% and 70% based on initial content at 10 minutes, respectively. This means that most of lignin and hemicellulose can be removed while keeping cellulose intact, and indicates that ethylene glycol can be used as a pretreatment reagent under proper reaction conditions. Pretreatment by
ethylene glycol does not need high pressure equipment because of its high boiling point (197.6℃), whereas conventional pretreatment by aqueous liquor does. The major parameters to affect on pretreatment performance are temperature, acid concentration, and reaction time. To
compare the pretreatment performance of a reaction with other’s, a unified parameter that combines temperature, acid concentration, and reaction time, called as severity parameter, can be used. Since the pH of nonaqueous solvent like ethylene glycol cannot be measured, we
modified Chum et al.’s equation (2) by replacing hydrogen ion concentration with sulfuric acid concentration (% weight). The result indicated that severity factor could be well correlated with the removal of cellulose, hemicellulose and lignin, and enzymatic digestibility,
respectively.

키워드

저자

• Dong hun LEE [ Dept. of Chemical & biological Engineering, Gyeongsang University ]
• Soo eun PARK [ Dept. of Chemical & biological Engineering, Gyeongsang University ]
• Chang joon KIM [ Dept. of Chemical & biological Engineering, Gyeongsang University ]
• Sung bae KIM [ Dept. of Chemical & biological Engineering, Gyeongsang University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576