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Single-step microwave-assisted hot water extraction of hemicelluloses from selected lignocellulosic materials: A biorefinery approach
RISE - Research Institutes of Sweden, Bioekonomi, PFI. Stellenbosch University, South Africa.
RISE - Research Institutes of Sweden, Bioekonomi, PFI.ORCID-id: 0000-0003-3456-9556
Stellenbosch University, South Africa.
RISE - Research Institutes of Sweden, Bioekonomi, PFI.
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2017 (Engelska)Ingår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 241, s. 669-680Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The viability of single-step microwave-induced pressurized hot water conditions for co-production of xylan-based biopolymers and bioethanol from aspenwood sawdust and sugarcane trash was investigated. Extraction of hemicelluloses was conducted using microwave-assisted pressurized hot water system. The effects of temperature and time on extraction yield and enzymatic digestibility of resulting solids were determined. Temperatures between 170–200 °C for aspenwood and 165–195 °C for sugarcane trash; retention times between 8–22 min for both feedstocks, were selected for optimization purpose. Maximum xylan extraction yields of 66 and 50%, and highest cellulose digestibilities of 78 and 74%, were attained for aspenwood and sugarcane trash respectively. Monomeric xylose yields for both feedstocks were below 7%, showing that the xylan extracts were predominantly in non-monomeric form. Thus, single-step microwave-assisted hot water method is viable biorefinery approach to extract xylan from lignocelluloses while rendering the solid residues sufficiently digestible for ethanol production.

Ort, förlag, år, upplaga, sidor
2017. Vol. 241, s. 669-680
Nyckelord [en]
hemicellulose, lignocellulose, biorefinery, Aspenwood, sugarcane trash
Nationell ämneskategori
Pappers-, massa- och fiberteknik
Identifikatorer
URN: urn:nbn:se:ri:diva-29970DOI: 10.1016/j.biortech.2017.05.159Scopus ID: 2-s2.0-85020459839OAI: oai:DiVA.org:ri-29970DiVA, id: diva2:1129187
Tillgänglig från: 2017-08-01 Skapad: 2017-08-01 Senast uppdaterad: 2018-08-13Bibliografiskt granskad

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