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dc.contributor.authorMomayez, Forough
dc.contributor.authorHedenström, Mattias
dc.contributor.authorStagge, Stefan
dc.contributor.authorJönsson, Leif
dc.contributor.authorMartín, Carlos
dc.date.accessioned2022-08-31T11:46:42Z
dc.date.available2022-08-31T11:46:42Z
dc.date.created2022-08-11T15:09:32Z
dc.date.issued2022
dc.identifier.issn0960-8524
dc.identifier.urihttps://hdl.handle.net/11250/3014703
dc.description.abstractHydrolysis lignin, i.e., the hydrolysis residue of cellulosic ethanol plants, was extracted with the green solvent γ-valerolactone (GVL). Treatments at 170–210 ◦C were performed with either non-acidified GVL/water mixtures (NA-GVL) or with mixtures containing sulfuric acid (SA-GVL). SA-GVL treatment at 210 ◦C resulted in the highest lignin solubilization (64% (w/w) of initial content), and 76% of the solubilized mass was regenerated by water induced precipitation. Regenerated lignins were characterized through compositional analysis with sulfuric acid, as well as using pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS), high-performance size-exclusion chromatography (HPSEC), solid-state cross-polarization/magic angle spinning 13C nuclear magnetic resonance (CP/MAS 13C NMR) spectroscopy, 1 H–13C heteronuclear single-quantum coherence NMR (HSQC NMR), and Fourier-transform infrared (FTIR) spectroscopy. The characterization revealed that the main difference between regenerated lignins was their molecular weight. Molecular weight averages increased with treatment temperature, and they were higher and had broader distribution for SA-GVL lignins than for NA-GVL lignins.en_US
dc.language.isoengen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectHydrolysis ligninen_US
dc.subjectγ-valerolactoneen_US
dc.subjectBiorefineryen_US
dc.subjectLignocelluloseen_US
dc.subjectEnzymatic saccharificationen_US
dc.titleValorization of hydrolysis lignin from a spruce-based biorefinery by applying -valerolactone treatmenten_US
dc.title.alternativeValorization of hydrolysis lignin from a spruce-based biorefinery by applying -valerolactone treatmenten_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.volume359en_US
dc.source.journalBioresource Technologyen_US
dc.identifier.cristin2042497
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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