Comparison of Conventional and Novel Pre-treatment Methods for Bioethanol Production from Fruit and Vegetable Wastes

In this study, novel and conventional techniques for the production of bioethanol from fruit and vegetable wastes (FVWs) by yeast and bacterial fermentation were investigated experimentally. Different pretreatment techniques (acid, heat, acid/heat, and microwave) for yeast fermentation were compared...

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Bibliographic Details
Published inChemical and Biochemical Engineering Quarterly Vol. 33; no. 4; pp. 471 - 483
Main Author Keskin, Tugba
Format Journal Article Paper
LanguageEnglish
Published Croatian Association of Chemical Engineers 2020
Hrvatsko društvo kemijskih inženjera i tehnologa
Croatian Society of Chemical Engineers
Subjects
Analysis
bioethanol
Ethanol
Fermentation
fruit and vegetable wastes
Methods
Novels
pretreatment
Production processes
syngas fermentation
Vegetables
yeast fermentation
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ISSN0352-9568
1846-5153
DOI10.15255/CABEQ.2019.1738

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Summary:In this study, novel and conventional techniques for the production of bioethanol from fruit and vegetable wastes (FVWs) by yeast and bacterial fermentation were investigated experimentally. Different pretreatment techniques (acid, heat, acid/heat, and microwave) for yeast fermentation were compared. Maximum ethanol concentrations of 11.7 and 11.8 g L–1 were observed from acid/heat and microwave pretreatment, respectively, by using Saccharomyces cerevisiae. On the other hand, biochar production from FVWs and syngas fermentation from the waste gas of this process were integrated. From waste gas with 12 % CO content, 5.5 g L–1 and 2.5 g L–1 ethanol production was observed by using anaerobic mixed culture and Clostridium ljungdahlii, respectively. The overall results emphasize the potential of bioethanol production from FVWs by economically feasible and environmentally friendly methods.
Bibliography:232515
ISSN:0352-9568
1846-5153
DOI:10.15255/CABEQ.2019.1738