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Ethanol production in an immobilized-cell reactor

✍ Scribed by O. C. Sitton; J. L. Gaddy

Book ID
102766721
Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
571 KB
Volume
22
Category
Article
ISSN
0006-3592

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✦ Synopsis

Abstract

Biomass can be converted to sugars by hydrolysis with enzymes or mineral acids. These sugars can be converted into a number of chemical intermediates in biological reactors. Biological reactions are generally slow and selection of the most efficient reactor is important in these applications. Immobilized‐cell reactors allow high cell densities and high throughput by attaching the microorganisms to a fixed support. This paper examines the rate of production of ethanol from glucose by Saccharomyces cerevisia in a packed column. These rates are compared with those for the same reaction in a stirred reactor.

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Saccharornyces cerevisiae ATCC 39859 was immobilized onto small cubes of wood to produce ethanol and very enriched fructose syrup from glucoselfructose mixtures through the selective fermentation of glucose. A maximum ethanol productivity of 21.9 g 11. h was attained from a feed containing 9.7% (w/v