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Fermentation 2015, 1(1), 98-112; doi:10.3390/fermentation1010098

Development of Novel Textile Bioreactor for Anaerobic Utilization of Flocculating Yeast for Ethanol Production

Swedish Centre for Resource Recovery, University of Borås, SE 50190 Borås, Sweden
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Academic Editor: Ronnie G. Willaert
Received: 17 September 2015 / Revised: 17 November 2015 / Accepted: 19 November 2015 / Published: 23 November 2015
(This article belongs to the Special Issue Yeast Biotechnology)
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Abstract

Process development, cheaper bioreactor cost, and faster fermentation rate can aid in reducing the cost of fermentation. In this article, these ideas were combined in developing a previously introduced textile bioreactor for ethanol production. The bioreactor was developed to utilize flocculating yeast for ethanol production under anaerobic conditions. A mixing system, which works without aerators, spargers, or impellers, but utilizes the liquid content in the bioreactor for suspending the flocculating yeast to form a fluidized bed, was developed and examined. It could be used with dilution rates greater than 1.0 h1 with less possibility of washout. The flow conditions required to begin and maintain a fluidized bed were determined. Fermentation experiments with flow rate and utilization of the mixing system as process variables were carried out. The results showed enhanced mass transfer as evidenced by faster fermentation rates on experiments with complete sucrose utilization after 36 h, even at 30 times lesser flow rate. View Full-Text
Keywords: flocculating yeast; textile bioreactor; ethanol; mass transfer; mixing; fluidization flocculating yeast; textile bioreactor; ethanol; mass transfer; mixing; fluidization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Osadolor, O.A.; Lennartsson, P.R.; Taherzadeh, M.J. Development of Novel Textile Bioreactor for Anaerobic Utilization of Flocculating Yeast for Ethanol Production. Fermentation 2015, 1, 98-112.

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