期刊
JOURNAL OF CLEANER PRODUCTION
卷 264, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2020.121658
关键词
Bioethanol production; Enzymatic hydrolysis; Fermentation; Waste hamburger
资金
- NSFC-Zhejiang Joint Fund for the Integration of Industrialization and Information [U1709215]
- National Science Foundation of China [61771178, 41373121]
- Natural Science Foundation of Zhejiang [GK190903218011]
Hamburger is one of the largest parts of fast food in the world. The feasibility of bioethanol production from waste hamburger (WH) by enzymatic hydrolysis (commercial alpha-amylase) and fermentation was investigated in this study. Different enzyme loading volumes (B1: 0.02 mL/L, B2: 0.08 mL/L and B3: 0.14 mL/L) were used to evaluate the hydrolysis efficiency. The maximum chemical oxygen demand of 74.2 g/L, reducing sugar (RS) of 39.2 g/L and hydrolysis efficiency of 0.784 g RS/g WH could be achieved with B3. The reduction rate of WH could reach 76.8%-80.4%. The ethanol fermentation could be finished within 50 h since the soluble nutrient pretreated by alpha-amylase was easy to be used by the yeast. The highest ethanol production of 27.4 g/L and ethanol yield of 0.271 g ethanol/g WH (0.34 g ethanol/g TS) were achieved with B3. The waste hamburger hydrolysate is a promising substrate for bioethanol production and has high potential for industrial application. (C) 2020 Elsevier Ltd. All rights reserved.
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