生物燃料
酒糟
生产(经济)
环境科学
生物能源
乙醇燃料
价值(数学)
环境影响评价
废物管理
农业经济学
农业科学
自然资源经济学
业务
制浆造纸工业
经济
食品科学
化学
数学
工程类
生态学
生物
微观经济学
统计
作者
Yuxi Zheng,Huu Hao Ngo,Li Han,Ruxue Wang,Chun Li,Zhang Chao-long,Xuliang Wang
标识
DOI:10.1016/j.biortech.2024.130470
摘要
Here, Baijiu distillers' grains (BDGs) were employed in biorefinery development to generate value-added co-products and bioethanol. Through ethyl acetate extraction at a 1:6 solid-liquid ratio for 10 h, significant results were achieved, including 100 % lactic acid and 92 % phenolics recovery. The remaining BDGs also achieved 99 % glucan recovery and 81 % glucan-to-glucose conversion. Simultaneous saccharification and fermentation of remaining BDGs at 30 % loading resulted in 78.5 g bioethanol/L with a yield of 94 %. The minimum selling price of bioethanol varies from $0.149-$0.836/kg, contingent on the co-product market prices. The biorefinery processing of one ton of BDGs caused a 60 % reduction in greenhouse gas emissions compared to that of the traditional production of 88 kg corn-lactic acid, 70 kg antioxidant phenolics, 234 kg soybean protein, and 225 kg corn-bioethanol, along with emissions from BDG landfilling. The biorefinery demonstrated a synergistic model of cost-effective bioethanol production and low-carbon emission BDGs treatment.
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