Continuous recycling of enzymes during production of lignocellulosic bioethanol in demonstration scale
메타 데이터
바이오화학분류
바이오플라스틱
플라스틱
바이오정밀화학
용매
화학제품
연료
화장품용 기능성소재
계면활성제⁄증점제
의료용 화학소재
식품첨가제
논문
Continuous recycling of enzymes during production of lignocellulosic bioethanol in demonstration scale
학술지
Applied energy
저자명
Haven, M.O.; Lindedam, J.; Jeppesen, M.D.; Elleskov, M.; Rodrigues, A.C.; Gama, M.; Jorgensen, H.; Felby, C.
초록
Recycling of enzymes in production of lignocellulosic bioethanol has been tried for more than 30years. So far, the successes have been few and the experiments have been carried out at conditions far from those in an industrially feasible process. Here we have tested continuous enzyme recycling at demonstration scale using industrial process conditions (high dry matter content and low enzyme dosage) for a period of eight days. The experiment was performed at the Inbicon demonstration plant (Kalundborg, Denmark) capable of converting four tonnes of wheat straw per hour. 20% of the fermentation broth was recycled to the hydrolysis reactor while enzyme dosage was reduced by 5%. The results demonstrate that recycling enzymes by this method can reduce overall enzyme consumption and may also increase the ethanol concentrations in the fermentation broth. Our results further show that recycling fermentation broth also opens up the possibility of lowering the dry matter content in hydrolysis and fermentation while still maintaining high ethanol concentrations.