Ethanol fermentation by Saccharomyces cerevisiae from potato waste hydrolysate in biofilm reactors

Gulten Izmirlioglu, Ali Demirci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Bioethanol is a renewable energy source as an alternative to fossil fuels. Bioethanol is produced from starchy biomass in the U.S. such as corn. However, a cheaper non-food value source is needed. In this context, wastes of industrial potato processing plant were utilized as carbon source for ethanol production. On the other hand, to reduce the cost of ethanol and improve the effectiveness of the process, cell immobilization was employed. Plastic composite supports (PCS) are solid supports that were used to stimulate biofilm formation in bioreactor (a.k.a. biofilm reactor) during microbial production of value-added products. Therefore, in this study, PCS were employed to promote the cell population and biofilm formation in the reactor. Response surface methodology was used to evaluate the various growth conditions, pH, temperature, and agitation, for enhanced ethanol production in biofilm reactors. The optimum conditions were found to be 4.2 pH, 34 °C, and 100 rpm agitation. An optimum ethanol concentration of 37.05 g/L ethanol yield, giving a 92.08% theoretical yield was achieved. The results indicated that biofilm reactors can enhance the ethanol fermentation from industrial potato wastes.

Original languageEnglish (US)
Title of host publication2016 American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE 2016
PublisherAmerican Society of Agricultural and Biological Engineers
ISBN (Electronic)9781510828759
DOIs
StatePublished - Jan 1 2016
Event2016 ASABE Annual International Meeting - Orlando, United States
Duration: Jul 17 2016Jul 20 2016

Publication series

Name2016 American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE 2016

Other

Other2016 ASABE Annual International Meeting
CountryUnited States
CityOrlando
Period7/17/167/20/16

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Agronomy and Crop Science

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