期刊
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
卷 105, 期 -, 页码 219-230出版社
HUMANA PRESS INC
DOI: 10.1385/ABAB:105:1-3:219
关键词
cotton gin waste; steam explosion; characterization; summative composition
Cotton gin residue (CGR) collected from five cotton gins was fractionated and characterized for summative composition. The. major fractions of the CGR varied widely between cotton gins and consisted of clean lint (5-12%), hulls (16-48%), seeds (6-24%), motes (16-24%), and leaves (14-30%). The summative composition varied within and between cotton gins and consisted of ash (7.9-14.6%), acid-insoluble material (18-26%), xylan (4-15%), and cellulose (20-38%). Overlimed steam-exploded cotton gin waste was readily fermented to ethanol by Escherichia coli KO11. Ethanol yields were feedstock and severity dependent and ranged from 58 to 92.5% of the theoretical yields. The highest ethanol yield was 191 L (50 gal)/t, and the lowest was 120 L (32 gal)/t.
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