Low temperature chemical looping combustion of pyrolysis gases in a fixed bed reactor

Gracia Monforte, César; Maldonado-Martín, Francisco; Atienza Martínez, María; Ábrego, Javier

Low temperature chemical looping combustion of pyrolysis gases in a fixed bed reactor

dc.contributor.author	Gracia Monforte, César
dc.contributor.author	Maldonado-Martín, Francisco
dc.contributor.author	Atienza Martínez, María
dc.contributor.author	Ábrego, Javier
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Zientziak	eu
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.contributor.funder	Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
dc.contributor.funder	Gobierno de Navarra / Nafarroako Gobernua
dc.date.accessioned	2025-06-25T09:05:52Z
dc.date.available	2025-06-25T09:05:52Z
dc.date.issued	2025-08-01
dc.date.updated	2025-06-25T08:58:10Z
dc.description.abstract	This study presents an experimental investigation into the feasibility of oxidizing biomass pyrolysis gases at relatively low temperatures using a chemical looping combustion (CLC) approach. The application of this alternative method would enable the capture of carbon from the pyrolysis gas stream, which is currently released into the atmosphere in most pyrolysis systems, as high-purity CO2. In a fixed bed reactor, the reduction behavior of three different Cu-based oxygen carriers (OC) - pure CuO pellets, carulite and Al2O3-supported CuO - was evaluated to determine whether pyrolysis gases could be completely oxidized to CO2 and H2O within a temperature range of 600–650 ◦C and at weight hourly space velocities (WHSV) of 0.06–0.10 h− 1 . Both CuO and carulite exhibited significant amounts of unconverted pyrolysis gases even during the initial stages of the reduction experiments. In contrast, Al2O3-supported CuO emerged as the most effective material, facilitating the complete oxidation of pyrolysis gases over extended reaction times. For this oxygen carrier, a decline in the combustion efficiency was only observed at very high (90 %) reduction conversions. Reduction/oxidation cycles for this most promising material were successfully demonstrated, with the oxygen carrier showing no signs of activity loss after 10 cycles. However, carbon deposition was detected under several experimental conditions, which could potentially reduce the carbon capture efficiency of the process.	en
dc.description.sponsorship	This work was funded by the Spanish Agencia Estatal de Investigación ( AEI ) and Ministerio de Ciencia e Innovación ( MICINN ), and the European Union's NextGenerationEU funds and Plan de Recuperación, Transformación y Resiliencia (grant number PDC2022-133374-I00). María Atienza-Martínez would like to thank Dirección General de Industria, Energía y Proyectos Estratégicos S4, Gobierno de Navarra , and European Regional Development Fund (ERDF) for supporting her postdoctoral contract (grant number 0011-1365-2023-000101). Open access funding provided by Universidad Pública de Navarra.
dc.format.mimetype	application/pdf
dc.format.mimetype	application/msword
dc.identifier.citation	Gracia-Monforte, C., Maldonado-Martín, F., Atienza-Martínez, M., Ábrego, J. (2025). Low temperature chemical looping combustion of pyrolysis gases in a fixed bed reactor. Biomass and Bioenergy, 199, 1-9. https://doi.org/10.1016/j.biombioe.2025.107911.
dc.identifier.doi	10.1016/j.biombioe.2025.107911
dc.identifier.issn	0961-9534
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/54312
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation.ispartof	Biomass and Bioenergy (2025), vol. 199, 107911
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PDC2022-133374-I00/ES/
dc.relation.projectID	info:eu-repo/grantAgreement/Gobierno de Navarra//0011-1365-2023-000101/
dc.relation.publisherversion	https://doi.org/10.1016/j.biombioe.2025.107911
dc.rights	© 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC license.
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	http://creativecommons.org/licenses/by-nc/4.0/
dc.subject	Advanced combustion	en
dc.subject	Carbon capture	en
dc.subject	Chemical looping combustion (CLC)	en
dc.subject	Oxygen carrier (OC)	en
dc.subject	Pyrolysis gas	en
dc.title	Low temperature chemical looping combustion of pyrolysis gases in a fixed bed reactor	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Publication
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