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Supercritical extraction as an effective first-step in a maize stover biorefinery

Attard, Thohmas. M. (author)
University of York, UK
Theeuwes, Elke (author)
Ecover Co-ordination Center NV, Belgium
Gomez, Leonardo D. (author)
University of York, UK
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Johansson, Emma (author)
RISE,SP Processum
Dimitriou, Ioanna (author)
University of Sheffield, UK
Wright, Phillip C. (author)
University of Sheffield, UK
Clark, James H. (author)
University of Sheffield, UK
McQueen-Mason, Simon J. (author)
University of York, UK
Hunt, Andrew J. (author)
University of York, UK
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 (creator_code:org_t)
2015
2015
English.
In: RSC Advances. - : Royal Society of Chemistry. - 2046-2069. ; 5:54, s. 43831-43838
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Supercritical carbon dioxide (scCO2) has been investigated for the generation of valuable waxy compounds and as an added-value technology in a holistic maize stover biorefinery. ScCO2 extraction and fractionation was carried out prior to hydrolysis and fermentation of maize stover. Fractionation of the crude extracts by scCO2 resulted in wax extracts having different compositions and melting temperatures, enabling their utilisation in different applications. One such fraction demonstrated significant potential as a renewable defoaming agent in washing machine detergent formulations. Furthermore, scCO2 extraction has been shown to have a positive effect on the downstream processing of the maize stover. Fermentation of the scCO2 extracted maize stover hydrolysates exhibited a higher glucose consumption and greater potential growth for surfactant (in comparison with non-scCO2 treated stover) axnd ethanol production (a 40% increase in overall ethanol production after scCO2 pre-treatment). This work represents an important development in the extraction of high value components from low value wastes and demonstrates the benefits of using scCO2 extraction as a first-step in biomass processing, including enhancing downstream processing of the biomass for the production of 2nd generation biofuels as part of an integrated holistic biorefinery.

Keyword

Bioconversion
Carbon dioxide
Ethanol
Extraction
Fermentation
Refining
Biomass processing
Detergent formulations
Downstream-processing
Ethanol production
Glucose consumption
Potential growth
Supercritical carbon dioxides
Supercritical extraction
Supercritical fluid extraction

Publication and Content Type

ref (subject category)
art (subject category)

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