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搅拌桨对菊芋联合生物加工发酵生产燃料乙醇的影响

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Indexed by:期刊论文

Date of Publication:2012-01-15

Journal:吉林化工学院学报

Volume:29

Issue:1

Page Number:71-75

ISSN No.:1007-2853

Key Words:搅拌桨;菊芋;乙醇;联合生物加工

Abstract:利用马克斯克鲁维酵母,通过联合生物加工(CBP)技术发酵菊芋生料生成乙醇.在相同的发酵工艺条件下,分别考察四种搅拌桨对乙醇发酵的影响,包括发酵液的混合情况及乙醇浓度、醪液的黏度等参数的变化.结果表明:三叶推进式搅拌桨能够明显提高乙醇产量,并减少发酵液静止区的体积,拆除挡板更适合高浓度菊芋生料的发酵.发酵初始干粉浓度为201g/L,补料后菊芋干粉终浓度达到273g/L时,48h乙醇浓度达到78.11g/L,乙醇对糖的得率为0.4407,为理论值的86.25%.此工艺为菊芋乙醇工业化的生产提供了有利条件.

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