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Full characterization of compounds obtained from fractional distillation and upgrading of a HTL biocrude
Aalborg University, Denmark.
Steeper Energy ApS, Denmark.
RISE - Research Institutes of Sweden, Bioekonomi, ETC Energy Technology Center.ORCID-id: 0000-0002-8264-4736
Aalborg University, Denmark.
2017 (Engelska)Ingår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 202, s. 408-419Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Biocrude from hydrothermal liquefaction of biomass provides a sustainable source from which to produce chemicals and fuels. However, just as for fossil crude, the chemical complexity of the biocrude impedes the characterization and hence identification of market potentials for both biocrude and individual fractions. Here, we reveal how fractional distillation of a biocrude can leverage biocrude characterization beyond state-of-the-art and uncover the full biocrude potential. By distillation combined with detailed individual analysis of the distillate fractions and distillation residue, more than 85% of the total biocrude composition is determined. It is demonstrated that a total mass fraction of 48.2% of the biocrude is volatile below 350 °C, comprising mainly value-added marketable ketones, oxygenated aromatics and prospective liquid fuel candidates, which are easily fractionated according to boiling points. Novel, high resolution pyr-GCxGC-MS analysis of the residue indicates a high molecular weight aromatic structure, valuable for bio-materials production or for further processing into fuels. The distillate fractions are mildly hydrotreated to show the fuel and chemical precursor potential of the volatile components. This results in the formation of mainly hydrocarbons and added-value phenolics. This work takes a significant step by going beyond the biocrude as an intermediate bulk energy product and addressing actual applications and pathways to these.

Ort, förlag, år, upplaga, sidor
2017. Vol. 202, s. 408-419
Nyckelord [en]
Biochemicals, Biofuels, Biorefinery, Fractionation, Hydrotreatment, Characterization, Commerce, Fuels, Ketones, Thermochemistry, Biorefineries, Distillate fractions, Distillation residues, Fractional distillation, High molecular weight, Hydrothermal liquefactions, Distillation, biofuel, biomass, crude oil, hydrocarbon, power generation, volatile substance
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-31079DOI: 10.1016/j.apenergy.2017.05.167Scopus ID: 2-s2.0-85019980380OAI: oai:DiVA.org:ri-31079DiVA, id: diva2:1137801
Forskningsfinansiär
Energimyndigheten
Anmärkning

 Funding details: Energimyndigheten; Funding text: This work is part of the Flexifuel Project, a Sino-Danish collaboration, and C3BO (Center for BioOil) at the Department of Energy Technology, Aalborg University. The research was financially supported by The Danish Agency for Science, Technology and Innovation (Grant No. 10-094552), The Danish Council for Strategic Research (Grant No. 1305-00030B), the Innovation Fund Denmark (Grant No. 4135-00126B), and the Swedish Energy Agency.

Tillgänglig från: 2017-09-01 Skapad: 2017-09-01 Senast uppdaterad: 2023-05-25Bibliografiskt granskad

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Sandström, Linda

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