LAPSE:2020.0801
Published Article
LAPSE:2020.0801
Production of Ethanol from Hemicellulosic Sugars of Exhausted Olive Pomace by Escherichia coli
Juan Carlos López-Linares, Irene Gómez-Cruz, Encarnación Ruiz, Inmaculada Romero, Eulogio Castro
July 2, 2020
Exhausted olive pomace (EOP) is the main residue generated in olive oil industries, after the extraction of the residual oil from olive pomace with hexane. This work studies the ethanol production from hemicellulosic sugars of EOP. The fermentability of the sugar solution, resulting from the acid pretreatment of EOP, was evaluated using Escherichia coli SL100, although a detoxification step was required before fermentation. Overliming and activated charcoal detoxification were tested to minimize the presence of inhibitory compounds in the hydrolysate and to achieve a fermentable medium. E. coli assimilated all sugars in both detoxified hydrolysates and achieved ethanol yields of about 90% of the theoretical one. However, the fermentation time was much shorter when the hydrolysate had been detoxified with activated charcoal (20 h versus 120 h).
Keywords
acid hydrolysate, biorefinery, detoxification, Fermentation, lignocellulosic residue
Suggested Citation
López-Linares JC, Gómez-Cruz I, Ruiz E, Romero I, Castro E. Production of Ethanol from Hemicellulosic Sugars of Exhausted Olive Pomace by Escherichia coli. (2020). LAPSE:2020.0801
Author Affiliations
López-Linares JC: Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
Gómez-Cruz I: Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain; Centre for Advanced Studies in Earth Sciences, Energy and Environment (CEACTEMA), Universidad de Jaén, Campus Las Lagunillas
Ruiz E: Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain; Centre for Advanced Studies in Earth Sciences, Energy and Environment (CEACTEMA), Universidad de Jaén, Campus Las Lagunillas
Romero I: Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain; Centre for Advanced Studies in Earth Sciences, Energy and Environment (CEACTEMA), Universidad de Jaén, Campus Las Lagunillas [ORCID]
Castro E: Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain; Centre for Advanced Studies in Earth Sciences, Energy and Environment (CEACTEMA), Universidad de Jaén, Campus Las Lagunillas [ORCID]
Journal Name
Processes
Volume
8
Issue
5
Article Number
E533
Year
2020
Publication Date
2020-05-01
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr8050533, Publication Type: Journal Article
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LAPSE:2020.0801
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doi:10.3390/pr8050533
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Jul 2, 2020
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CC BY 4.0
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[v1] (Original Submission)
Jul 2, 2020
 
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Jul 2, 2020
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https://psecommunity.org/LAPSE:2020.0801
 
Original Submitter
Calvin Tsay
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