Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst

5 figures, 3 tables.

Detalles Bibliográficos
Autores: Remón, Javier, Sevilla Gasca, Raquel, Frecha, Esther, Pinilla Ibarz, José Luis, Suelves Laiglesia, Isabel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/263378
Acceso en línea:http://hdl.handle.net/10261/263378
Access Level:acceso abierto
Palabra clave:Almond hulls
Hydrothermal hydrogenation
Value-added liquids
Ruthenium
Carbon nanofibres
http://metadata.un.org/sdg/12
Ensure sustainable consumption and production patterns
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spelling Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalystRemón, JavierSevilla Gasca, RaquelFrecha, EstherPinilla Ibarz, José LuisSuelves Laiglesia, IsabelAlmond hullsHydrothermal hydrogenationValue-added liquidsRutheniumCarbon nanofibreshttp://metadata.un.org/sdg/12Ensure sustainable consumption and production patterns5 figures, 3 tables.The almond industry leaves behind substantial amounts of by-products, with almond hulls being the primary residue generated. Given that one way to improve food security is by decreasing waste to reduce environmental impacts, developing sustainable processes to manage this by-product is necessary. Herein, we report on the hydrothermal hydrogenation of almond hulls over a carbon-neutral Ru supported on carbon nanofibres (Ru/CNF) catalyst, addressing the temperature, H2 pressure, time and catalyst loading. These variables controlled the distribution of the reaction products: gas (0–5%), liquid (49–82%) and solid (13–51%), and ruled the composition of the liquid effluent. This aqueous fraction comprised oligomers (46–81 wt%), saccharides (2–7 wt%), sugar alcohols (2–15 wt%), polyhydric alcohols (1–8 wt%) and carboxylic acids (7–31 wt%). The temperature and reaction time influenced the extension of hydrolysis, depolymerisation, deamination, hydrolysis, hydrogenation and dehydration reactions. Additionally, the initial H2 pressure and catalyst loading kinetically promoted these transformations, whose extensions were ruled by the amount of H2 effectively dissolved in the reaction medium and the prevalence of hydrogenations over dehydration/decarboxylation reactions or vice versa depending on the catalyst loading. Process optimisation revealed that it is feasible to convert up to 67% of almond hulls into merchantable oligomers at 230 °C, 35 bar initial H2, using 1 g catalyst/g biomass (0.4 g Ru/g biomass) for 360 min. Additionally, decreasing the temperature to 187 °C without modifying the other parameters could convert this material into oligomers (31 wt%) and small oxygenates (17 wt% carboxylic acids, 11 wt% sugar alcohols and 6 wt% polyhydric alcohols) concurrently. The theoretical energy assessment revealed that the total and partial combustion of the spent solid material could provide the required energy for the process and allow catalyst recovery and reutilisation. This environmental friendliness and holistic features exemplify a landmark step-change to valorising unavoidable food waste.The authors wish to express their gratefulness to FEDER and the Spanish Ministry of Science, Innovation and Universities (Grant Number ENE2017-83854-R) for providing financial support. Besides, Javier Remón is grateful to the Spanish Ministry of Science, Innovation and Universities for the Juan de la Cierva (JdC) fellowships (Grant Numbers FJCI-2016-30847 and IJC2018-037110-I) awarded.Peer reviewedElsevier BVEuropean CommissionMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Remón, Javier [0000-0003-3315-5933]Sevilla Gasca, Raquel [0000-0002-7650-0226]Pinilla Ibarz, José Luis [0000-0002-8304-9656]Suelves Laiglesia, Isabel [0000-0001-8437-2204]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/263378reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2017-83854-Rhttp://dx.doi.org/10.1016/j.scitotenv.2022.154044Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2633782026-05-22T06:33:51Z
dc.title.none.fl_str_mv Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
title Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
spellingShingle Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
Remón, Javier
Almond hulls
Hydrothermal hydrogenation
Value-added liquids
Ruthenium
Carbon nanofibres
http://metadata.un.org/sdg/12
Ensure sustainable consumption and production patterns
title_short Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
title_full Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
title_fullStr Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
title_full_unstemmed Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
title_sort Direct conversion of almond waste into value-added liquids using carbon-neutral catalysts: Hydrothermal hydrogenation of almond hulls over a Ru/CNF catalyst
dc.creator.none.fl_str_mv Remón, Javier
Sevilla Gasca, Raquel
Frecha, Esther
Pinilla Ibarz, José Luis
Suelves Laiglesia, Isabel
author Remón, Javier
author_facet Remón, Javier
Sevilla Gasca, Raquel
Frecha, Esther
Pinilla Ibarz, José Luis
Suelves Laiglesia, Isabel
author_role author
author2 Sevilla Gasca, Raquel
Frecha, Esther
Pinilla Ibarz, José Luis
Suelves Laiglesia, Isabel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Remón, Javier [0000-0003-3315-5933]
Sevilla Gasca, Raquel [0000-0002-7650-0226]
Pinilla Ibarz, José Luis [0000-0002-8304-9656]
Suelves Laiglesia, Isabel [0000-0001-8437-2204]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Almond hulls
Hydrothermal hydrogenation
Value-added liquids
Ruthenium
Carbon nanofibres
http://metadata.un.org/sdg/12
Ensure sustainable consumption and production patterns
topic Almond hulls
Hydrothermal hydrogenation
Value-added liquids
Ruthenium
Carbon nanofibres
http://metadata.un.org/sdg/12
Ensure sustainable consumption and production patterns
description 5 figures, 3 tables.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/263378
url http://hdl.handle.net/10261/263378
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2017-83854-R
http://dx.doi.org/10.1016/j.scitotenv.2022.154044
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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