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OxiOrganosolv: A novel acid free oxidative organosolv fractionation for lignocellulose fine sugar streams
Chemical Process and Energy Resources Institute (CPERI), CERTH, 6th Km Harilaou-Thermi Road, 57001 Thermi, Thessaloniki, Greece.
Chemical Process and Energy Resources Institute (CPERI), CERTH, 6th Km Harilaou-Thermi Road, 57001 Thermi, Thessaloniki, Greece. Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zografou Campus, Athens 15780, Greece.
Chemical Process and Energy Resources Institute (CPERI), CERTH, 6th Km Harilaou-Thermi Road, 57001 Thermi, Thessaloniki, Greece.
Chemical Process and Energy Resources Institute (CPERI), CERTH, 6th Km Harilaou-Thermi Road, 57001 Thermi, Thessaloniki, Greece.
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2020 (Engelska)Ingår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 313, artikel-id 123599Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The valorization of lignocellulosic biomass towards the production of value-added products requires an efficient pretreatment/fractionation step. In this work we present a novel, acid-free, mildly oxidative organosolv delignification process -OxiOrganosolv- which employs oxygen gas to depolymerize and remove lignin. The results demonstrate that the OxiOrganosolv process achieved lignin removal as high as 97% in a single stage, with a variety of solvents; it was also efficient in delignifying both beechwood (hardwood) and pine (softwood), a task in which organosolv pretreatments have failed in the past. Minimal amounts of sugar degradation products were detected, while cellulose recovery was ~100% in the solid pulp. Enzymatic hydrolysis of pulps showed >80 wt% cellulose conversion to glucose. Overall, the OxiOrganosolv pretreatment has significant advantages, including high delignification efficiency of hardwood and softwood biomass, absence of acid homogeneous catalysis and all corresponding challenges involved, and close to zero losses of sugars to degradation products.

Ort, förlag, år, upplaga, sidor
Elsevier, 2020. Vol. 313, artikel-id 123599
Nyckelord [en]
Biorefinery, Delignification, Enzymatic hydrolysis, Organosolv oxidation pretreatment
Nationell ämneskategori
Bioprocessteknik
Forskningsämne
Biokemisk processteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-79562DOI: 10.1016/j.biortech.2020.123599ISI: 000551494900008PubMedID: 32540692Scopus ID: 2-s2.0-85086764284OAI: oai:DiVA.org:ltu-79562DiVA, id: diva2:1440855
Anmärkning

Validerad;2020;Nivå 2;2020-06-15 (alebob)

Tillgänglig från: 2020-06-15 Skapad: 2020-06-15 Senast uppdaterad: 2020-08-26Bibliografiskt granskad

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Topakas, Evangelos

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