A Novel Process of Ethanol Production Accompanied by Extraction of Sugar in Cane Chips

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概要

• 論文の詳細を見る

• By connecting a rhomboid unit for fermentation and an exchangeable tubular unit for extraction, a novel bioreactor was designed to produce high concentrations of ethanol solution from non-peeled sugar canne chips by means of a cyclic system for exchanging old chips with new ones. The rhomboid and tubular units were packed with 1.0-1.5 mm biocatalyst entrapped yeast-cells with A1 alginate and cane chips of 2.0-3.0 mm in width, respectively. The volume ratio of the two units was 1.0. At the start of the first cycle, 2 g/l of Al_2(SO_4)_3 14-18 H_2O solution was added to the bioreactor, where the ratio of the solution of the working volume was 0.85. Both sugar extraction and fermentation were anaerobically performed at pH 2.5 and a temperature of 30℃ by circulating the solution through the two units. After each cycle, the tubular unit was exchanged for a new unit packed with new chips. The combined solution of free ethanol and the ethanol obtained by pressing the old chips was re-used as the circulating solution.When the volume ratio of the biocatalyst to the total working volume was 0.1 and the amount of dried cane chips in the tubular unit was 200 g/l, 16% (w/v) ethanol was produced after 7 cycles. Each cycle was established at about 20 h. The number of free cells in the circulating solution was only 2×10^7/ml after 7 cycles.

• 社団法人日本生物工学会の論文
• 1988-08-25

著者

• YAMADE KAZUHIRO

  Department of Biotechnology, Faculty of Engineering, Kansai University

• Yamade K

  Department Of Biotechnology Faculty Of Engineering Kansai University

• Yamade Kazuhiro

  Department Of Biotechnology Faculty Of Engineering Kansai University:kansai University High Technolo

• FUKUSHIMA SUSUMU

  Department of Chemical Engineering, Faculty of Engineering, Kansai University

• Fukushima S

  Kansai Univ. Suita Jpn

• Fukushima Susumu

  Department Of Chemical Engineering Faculty Of Engineering Kansai University

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