Earticle

초록

영어

In order to improve bio-ethanol productivity by various cultivation methods in this paper, the culture modes using food wastes, such as batch culture, high-cell-density fermentation, SSF(simultaneous saccharification and fermentation) by fill &draw, continuous culture by fill &draw were performed and their productivities were compared. SSFs by fill &draw were performed by continuous decompression with 1 L evaporator system, and by 10 L bioreactor without decompression. In addition, the continuous cultures by fill &draw mode using SFW(saccharafied food waste) medium were performed by changes of 40% culture broth with intervals of 12 hr(0.03/hr), 6 hr(0.07/hr), 3 hr(0.13/hr). Consequently, productivities of bio-ethanol were 2.52 g/L-hr and 1.30 g/L-hr in batch culture and high-cell-density fermentation, respectively. The productivies of SSF by fill &draw showed 2.24 g/L-hr and 2.03 g/L-hr in continuous decompression with 1 L evaporator and 10 L bioreactor without decompression, respectively. Also, the productivities in continuous culture by fill &draw modes showed 2.02 g/L-hr, 4.07 g/L-hr and 6.25 g/L-hr by medium change with intervals of 12 hr, 6 hr and 3 hrs, respectively. In conclusion, the highest ethanol productivity was obtained in the continuous culture mode by fill &draw with medium change of 40% by 3 hrs(0.13/hr) interval.

키워드

저자

• Hong Xian LI [ Dept. of Environmental Engineering, Chonnam National University, Gwangju, 500-757. ]
• Hee-Jung KANG [ Dept. of Environmental Engineering, Chonnam National University, Gwangju, 500-757. ]
• Seong-Jun KIM [ Dept. of Environmental Engineering, Chonnam National University, Gwangju, 500-757. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576