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dc.contributor.authorHita, I.
dc.contributor.authorGhoreishi, S.
dc.contributor.authorSantos, J. I.
dc.contributor.authorBarth, T.
dc.contributor.authorHeeres, H. J.
dc.date.accessioned2020-11-19T05:18:13Z
dc.date.available2020-11-19T05:18:13Z
dc.date.issued2020-11-10
dc.date.submitted2020-08-20
dc.identifier.citationHita, I., Ghoreishi, S., Santos, J. I., Barth, T., & Heeres, H. J. (2020). Hydrothermal liquefaction versus catalytic hydrodeoxygenation of a bioethanol production stillage residue to platform chemicals: A comparative study. Fuel Processing Technology, 106654. doi:10.1016/j.fuproc.2020.106654
dc.identifier.issn0378-3820
dc.identifier.doi10.1016/j.fuproc.2020.106654
dc.identifier.urihttp://hdl.handle.net/10754/666028
dc.description.abstractBiobased chemicals like phenols and aromatics are preferably produced from cheap biomass waste streams. In this work, we have explored the potential of a eucalyptus-derived second generation bioethanol production stillage (BPS) residue for this purpose. A comparative study between a hydrothermal liquefaction (HTL) and a catalytic hydrodeoxygenation (HDO) step, as well as a 2-step HTL-HDO approach is reported, targeting at value-added low molecular weight platform chemicals (mainly alkylphenols and aromatics). HDO was observed to be a more suitable strategy than HTL for the production of organic oils enriched in valuable monomers. The direct HDO of the BPS using a commercial Ru/C catalyst at 450 °C and 100 bar H2 pressure led to an organic product oil (30.7 wt%) with a total monomer yield of 25.2 wt% (13.2 wt% of alkylphenolic+aromatics), compared to a 53.2 wt% of a product oil with 10.0 wt% monomers for the HTL step (305 °C). A 2-step HTL-HDO strategy was compared with the direct HDO approach. Comparable alkylphenolic+aromatic yields were obtained through this approach based on initial BPS intake (13.2 wt% vs 12.3 wt% for the direct HDO and HTL-HDO approach, respectively). Lower HTL temperatures (305 °C) for the first step are preferred to prevent over hydrogenation in the subsequent HDO step. As such, HTL appears a suitable pre-treatment for BPS and can (i) solve the issues related to the feeding of solids in pressurized continuous reactors for HDO and (ii) prevent coke formation during the HDO step, thus improving catalyst stability and durability.
dc.description.sponsorshipDr. Idoia Hita is grateful for her postdoctoral grant awarded by the Department of Education, University and Research of the Basque Government (grant number POS_2015_1_0035). Leon Rohrbach, Jan Henk Marsman, Erwin Wilbers, Marcel de Vries, and Anne Appeldoorn are acknowledged for their technical and analytical support. Hans van der Velde is thanked for performing the elemental analysis.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0378382020309450
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Fuel Processing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel Processing Technology, [, , (2020-11-10)] DOI: 10.1016/j.fuproc.2020.106654 . © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleHydrothermal liquefaction versus catalytic hydrodeoxygenation of a bioethanol production stillage residue to platform chemicals: A comparative study
dc.typeArticle
dc.contributor.departmentKing Abdullah University of Science and Technology, KAUST Catalysis Center (KCC), Multiscale Reactor Engineering, Thuwal 23955-6900, Saudi Arabia
dc.identifier.journalFuel Processing Technology
dc.rights.embargodate2022-11-10
dc.eprint.versionPost-print
dc.contributor.institutionChemical Engineering Department, ENTEG, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
dc.contributor.institutionDepartment of Chemistry, University of Bergen, Allegaten 41, N-5007 Bergen, Norway
dc.contributor.institutionDepartment of Chemical Engineering, University of the Basque Country (UPV/EHU), PO Box 644-48080, Bilbao, Spain
dc.identifier.pages106654
kaust.personHita, I.
dc.date.accepted2020-10-23
dc.identifier.eid2-s2.0-85095941584
refterms.dateFOA2020-11-19T08:17:08Z
dc.date.published-online2020-11-10
dc.date.published-print2020-11


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