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Pre-treatment and Ethanol Fermentation Potential of Olive Pulp at Different Dry Matter Concentrations by Frank Haagensen; Ioannis V. Skiadas; Hariklia N. Gavala; Birgitte K. Ahring is a Engineering article available to read on EtoBox.

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Renewable energy sources have received increased interest from the international community with biomass being one of the oldest and the most promising ones. In the concept of exploitation of agro-industrial residues, the present study investigates the pre-treatment and ethanol fermentation potential of the olive pulp, which is the semi solid residue generated from the two-phase processing of the olives for olive oil production. Wet oxidation and enzymatic hydrolysis have been applied aiming at the enhancement of carbohydrates' bioavailability. Different concentrations of enzymes and enzymatic durations have been tested. Both wet oxidation and enzymic treatment were evaluated based on the ethanol obtained in a subsequent fermentation step by Saccharomyces cerevisiae and Thermoanaerobacter mathranii. It was found that a four-day hydrolysis time was adequate for a satisfactory release of glucose and xylose. The combination of wet oxidation and enzymatic hydrolysis resulted in the glucose and xylose concentration increase of 138 and 444%, respectively, compared to 33 and 15% with only enzymes added. However, the highest ethanol production was obtained when only enzymic pre-treatment wa

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Author

Frank Haagensen; Ioannis V. Skiadas; Hariklia N. Gavala; Birgitte K. Ahring

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0961-9534)

Published

2009

Language

EN

Field

Engineering (Physical Sciences)