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CONTINUOUS ETHANOL PRODUCTION FROM WOOD HYDROLYSATE BY CHEMO- STAT AND TOTAL CELL RETENTION CULTURE

Lee WG Lee JS Park BG Kim MS Park SC Chang HN

Korean Journal of Chemical Engineering, September 1996, 13(5), 453-456(4), 10.1007/BF02705993

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Abstract

Chemostat and total cell retention cultures with internal filter system of Saccharomyces cere- visiae H1-7 were carried out to produce ethanol from wood hydrolysate. Maximum ethanol productivity obtained in a chemostat with the aeration rate of 1 vvm was 3.79 g/(L h). This was 20% higher than that in a chemostat without aeration. However, the substrate was not completely consumed at the dilution rate with the maximum productivity. The realistic productivity, which has higher than 99% conversion rate of substrate, was 2.95 g/(L h). The maximum productivity in the total cell retention culture was 6.65 g/(L h) at the dilution rate of 0.19 h^-1 and the residual glucose concentration was negligible.

Keywords

Wood Hydrolysate Toxic Materials Continuous Ethanol Fermentation Realistic Producitivity Internal Filter System

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