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Furfural Production and Recovery by Two-stage Acid Treatment of Lignocellulosic Biomass

Two-stage 산 처리에 의한 목질계 바이오매스로부터 푸르푸랄 생산과 회수

  • Shin, Gyeong-Jin (Department of Forest Products and Technology, Chonnam National University) ;
  • Jeong, So-Yeon (Department of Forest Products and Technology, Chonnam National University) ;
  • Lee, Hong-Joo (Department of Bioenergy and Technology, Chonnam National University) ;
  • Lee, Jae-Won (Department of Forest Products and Technology, Chonnam National University)
  • 신경진 (전남대학교 농업생명과학대학 산림자원학부) ;
  • 정소연 (전남대학교 농업생명과학대학 산림자원학부) ;
  • 이홍주 (전남대학교 농업생명과학대학 바이오에너지공학과) ;
  • 이재원 (전남대학교 농업생명과학대학 산림자원학부)
  • Received : 2014.07.07
  • Accepted : 2014.09.25
  • Published : 2015.01.25

Abstract

In this study, we investigated optimal reaction conditions for furfural production from lignocellulosic biomass by two-stage acid treatment. Furfural produced by this method was recovered using XAD-4 resin. Oxalic and sulfuric acid were used as catalysts for the first stage of treatment. The concentration of xylose in the hydrolysate obtained from the first stage was $18.86g/{\ell}$ with oxalic acid and $19.35g/{\ell}$ with sulfuric acid. The concentration of oligosaccharide was relatively high when sulfuric acid was used. Maximum yield of furfural, that is, 55.10% ($6.71g/{\ell}$), was obtained when oxalic acid was used for the first stage and $0.1m{\ell}$ of sulfuric acid was used for the second stage of treatment for 90 min. Furfural production yield increased with increasing the reaction time. Most of the furfural produced by this two-stage treatment method was recovered using XAD-4 resin.

본 연구에서는 2단계 산 처리 방법을 이용하여 목질계 바이오매스로부터 푸르푸랄(furfural) 생산 조건을 탐색하고 생성된 푸르푸랄은 XAD-4 resin을 이용하여 회수하였다. 1차 산 처리 촉매로는 옥살산(oxalic acid)과 황산(sulfuric acid)을 사용하였다. 1차 산 처리로부터 얻어진 액상가수분해산물에 포함된 자일로스 농도는 옥살산과 황산 촉매에서 각각 $18.86g/{\ell}$, $19.35g/{\ell}$로 유사한 값을 나타냈다. 반면 올리고머 함량은 황산 촉매에서 높은 값을 나타냈다. 옥살산 전처리와 2차 황산 처리(황산 $0.1m{\ell}$, 90분)의 연속과정에서 최대 55.10%의 푸르푸랄 생산 수율을 나타냈다. 2차 산처리 과정에서 반응시간이 증가할수록 푸르푸랄 생산 수율은 증가하였다. 생성된 푸르푸랄은 XAD-4 resin을 이용하여 대부분 회수하였다.

Keywords

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