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Supercritical extraction and microwave activation of wood wastes for enhanced syngas production and generation of fullerene-like soot particles
Department of Chemical Sciences, University of Limerick, Limerick, Ireland.
Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, 123 Mittraparb Road, 40002 Khon Kaen, Thailand.
Department of Chemistry, The University of York, Heslington, York YO10 5DD, UK.
Department of Chemistry, The University of York, Heslington, York YO10 5DD, UK.
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2021 (English)In: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 212, article id 106633Article in journal (Refereed) Published
Abstract [en]

This work demonstrated that supercritical carbon dioxide extraction is effective as a pre-treatment technology to generate soot particles with the fullerene-like structure and increase syngas yield from extracted residues during coupled microwave activation with gasification. Supercritical carbon dioxide extraction removes over half of the fatty and resin acids from needles and branches, whereas the extraction of needles generates greater yields of value-added compounds. The high yields of extractives indicate the effective conversion of waste wood for the sustainable production of value-added chemicals. The wood extraction did not influence the solid residue yields during pyrolysis/gasification emphasizing the significant potential of integrating the extraction process into the holistic biorefinery. Interestingly, supercritical carbon dioxide extraction had a significant effect on the structure and quality of soot particles formed. The differences in the extractives composition led to the formation of needle soot particles with a porous and less ordered nanostructure, whereas the soot branches obtained a ring graphitic structure. The greater yields of steroids and terpenes during the extraction of needles compared to the branches pretreatment indicated the influence of the extractives type on the soot nanostructure. © 2020 The Author(s)

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 212, article id 106633
Keywords [en]
Carbon dioxide, Carbon dioxide process, Chemical activation, Dust, Fatty acids, Fullerenes, Nanostructures, Needles, Soot, Synthesis gas, Synthesis gas manufacture, Wood chemicals, Fullerene-like structures, Graphitic structures, Microwave activation, Ordered nanostructures, Supercritical carbon dioxide extraction, Supercritical extraction, Sustainable production, Value-added chemicals, Supercritical fluid extraction
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-81305DOI: 10.1016/j.fuproc.2020.106633ISI: 000598058400007Scopus ID: 2-s2.0-85092612259OAI: oai:DiVA.org:ltu-81305DiVA, id: diva2:1486580
Conference
1st International Conference on Energy and Environment. Nanjing, Jiangsu Province, China, Sep. 19-22, 2019
Note

Godkänd;2020;Nivå 0;2020-10-03 (johcin);Konferensartikel i tidskrift

Available from: 2020-11-03 Created: 2020-11-03 Last updated: 2021-10-29Bibliographically approved

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Umeki, Kentaro

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