期刊
BIORESOURCE TECHNOLOGY
卷 138, 期 -, 页码 259-265出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.03.180
关键词
Cheese whey; Butanol; Biofilm fixed bed reactor; ABE
Butanol production by Clostridium acetobutylicum DSM 792 fermentation was investigated. Unsupplemented cheese whey was adopted as renewable feedstock. The conversion was successfully carried out in a biofilm packed bed reactor (PBR) for more than 3 months. The PBR was a 4 cm ID, 16 cm high glass tube with a 8 cm bed of 3 mm Tygon rings, as carriers. It was operated at the dilution rate between 0.4 h(-1) and 0.94 h(-1). The cheese whey conversion process was characterized in terms of metabolites production (butanol included), lactose conversion and biofilm mass. Under optimized conditions, the performances were: butanol productivity 2.66 g/Lh, butanol concentration 4.93 g/L, butanol yield 0.26 g/g, butanol selectivity of the overall solvents production 82 wt%. (c) 2013 Elsevier Ltd. All rights reserved.
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