Earticle

초록

영어

Biobutanol has many characteristics that make it a better biofuel than bioethanol, now used in the formulation of gasohol. Despite the remarkable advantages of butanol as a fuel, biobutanol production has several limitations, including low values for the yield, productivity, and final product concentration. In this study, we examined the effect of two phase fermentation for the in-situ removal of butanol from fedbatch reactor fermentation broth using Clostridium beijerinckii NCIMB 8052. A non-toxic immiscible solvent, oleyl alcohol, was added to, and removed directly from the fed-batch reactor and extracted the majority of the inhibitory butanol from the aqueous broth. Oleyl alcohol did not inhibit the growth of the fermentative organism. In the batch culture, without solvent extraction, butanol production ceased after 30 h at a concentration of 11.6 g/L. Applying oleyl alcohol as an extraction solvent, about 83% of the total butanol produced was successfully extracted. In addition, improvement of productivity (0.34 g/L·h) and total butaol concentration (24.1 g/L) were achieved, which were 154 % and 206 %, respectively, higher than those obtained in the controlled traditional batch process. In conclusion, the presented two phase fermentation system for in-situ butanol removal by liquid-liquid extraction could be successfully applied for an integrated fermentation/product recovery system.

키워드

저자

• Min Ok CHO [ Korea Institute of Science and Technology, Seoul, Korea. ]
• Sun-Mi LEE [ Korea Institute of Science and Technology, Seoul, Korea. ]
• Youngsoon UM [ Korea Institute of Science and Technology, Seoul, Korea. ]
• Byoung-In SANG [ Korea Institute of Science and Technology, Seoul, Korea. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576