Porous structure and morphology of granular chars from flash and conventional pyrolysis of grape seeds

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dc.contributor.author Jimenez-Cordero, Diana
dc.contributor.author Heras, Francisco
dc.contributor.author Alonso-Morales, Noelia
dc.contributor.author Gilarranz, Miguel A.
dc.contributor.author Rodriguez, Juan J.
dc.contributor.other UAM. Departamento de Ingeniería Química es_ES
dc.date.accessioned 2019-04-23T12:15:42Z
dc.date.available 2019-04-23T12:15:42Z
dc.date.issued 2013-04-18
dc.identifier.citation Biomass and Bioenergy 54 (2013): 123-132 en_US
dc.identifier.issn 0961-9534 (print) en_US
dc.identifier.issn 1873-2909 (online) en_US
dc.identifier.uri http://hdl.handle.net/10486/687351
dc.description.abstract This work studies the influence of the operating conditions used in the pyrolysis of grape seeds on the morphology and textural properties of the chars resulting. Flash and conventional (283Kmin-1 heating rate) pyrolysis have been used within a wide range of temperature (300-1000°C). The effect of a pretreatment for oil extraction has also been studied. The porous structure of the chars was characterized by adsorption of N2 at 77K, Ar at 77K and 87K, and CO2 at 273K and mercury intrusion porosimetry. The morphology was analyzed by scanning electron microscopy. All the materials prepared revealed an essentially microporous structure, with a poor or even negligible contribution of mesopores. Increasing pyrolysis temperature led to higher specific surface areas and lower pore size. The highest specific surface area values occurred within 700-800°C, reaching up to 500m2g-1 with pore sizes in the 0.4-1.1nm range. No significant morphological changes were observed upon carbonization so that the resulting chars were granular materials of similar size than the starting grape seeds. The hollow core structure of the chars, with most of the material allocated at the periphery of the granules can help to overcome the mass transfer limitations of most common (solid or massive) granular activated carbons. The chars showed a good mechanical strength during attrition tests. These chars can be potential candidates for the preparation of granular carbons molecular sieve or activated carbons raw materials en_US
dc.description.sponsorship The authors greatly appreciate financial support from the Spanish Ministerio de Ciencia e Innovación (CTQ2009-09983) en_US
dc.format.extent 25 pag. en_US
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Elsevier en_US
dc.relation.ispartof Biomass and Bioenergy en_US
dc.rights © 2013 Elsevier Ltd. en_US
dc.subject.other Biomass en_US
dc.subject.other Char en_US
dc.subject.other Microporous carbon en_US
dc.subject.other Pyrolysis en_US
dc.subject.other Vitis vinifera en_US
dc.title Porous structure and morphology of granular chars from flash and conventional pyrolysis of grape seeds en_US
dc.type article en
dc.subject.eciencia Química es_ES
dc.date.embargoend 2015-04-18
dc.relation.publisherversion https://doi.org/10.1016/j.biombioe.2013.03.020Get es_ES
dc.identifier.doi 10.1016/j.biombioe.2013.03.020 es_ES
dc.identifier.publicationfirstpage 123 es_ES
dc.identifier.publicationlastpage 132 es_ES
dc.identifier.publicationvolume 54 es_ES
dc.relation.projectID Gobierno de España. CTQ2009-09983 es_ES
dc.type.version info:eu-repo/semantics/acceptedVersion en
dc.rights.cc Reconocimiento – NoComercial – SinObraDerivada es_ES
dc.rights.accessRights openAccess en
dc.authorUAM Gilarranz Redondo, Miguel Ángel (258382)
dc.authorUAM Heras Muñoz, Francisco (261193)

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