Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/43370
DC FieldValueLanguage
dc.contributor.authorPinzi, Sarait
dc.contributor.authorBuratti, Cinziait
dc.contributor.authorBartocci, Pietroit
dc.contributor.authorMarseglia, Guidoit
dc.contributor.authorFantozzi, Francescoit
dc.contributor.authorBarbanera, Marcoit
dc.date.accessioned2021-04-26T08:29:23Z-
dc.date.available2021-04-26T08:29:23Z-
dc.date.issued2020it
dc.identifier.issn0016-2361it
dc.identifier.urihttp://hdl.handle.net/2067/43370-
dc.description.abstractBiomass is a fundamental renewable resource to develop sustainable energy conversion systems with low environmental impact. The design of biomass pyrolysis, gasification, and combustion facilities requires a particular attention at kinetic aspects. A coffee production residue such as coffee silver skin, which is the main product of the coffee roasting industry, is very suitable for thermochemical conversion, being already dry and containing compounds like the ochratoxin which does not allow its use in the production of biochemicals. In this work, thermal degradation tests of coffee silver skin are made under inert conditions at various heating rates (5, 7, 10, 15 °C/min) and a proper kinetic model was considered in order to quantify the activation energy (E ). The variation of E with the conversion rate (α) was higher than 30%, showing that the process is kinetically complex and the kinetics cannot be described by a single-step model, according to the International Confederation on Thermal Analysis and Calorimetry. For this reason, a multi-step model and an analytical approach were used. This involves the deconvolution of the individual peaks of each pseudo-component from the overall differential kinetic curves, followed by the application of a model free-isoconversional method to the separated decomposition steps. The determination of the reaction mechanism f(α) of each sub-component (pseudo-cellulose P-CL, pseudo-hemicellulose P-HC, and pseudo-lignin P-LG) was performed by using both the Master-Plots method and the Energy Compensation Effect. The pre-exponential factor, the enthalpy and the Gibbs free energy were also evaluated in order to investigate the pyrolysis characteristics. A second order model mechanism was obtained for P-CL and P-HC, whereas no clear mechanism was found for P-LG when α > 0.5. α αit
dc.language.isoengit
dc.titleA simplified method for kinetic modeling of coffee silver skin pyrolysis by coupling pseudo-components peaks deconvolution analysis and model free-isoconversional methodsit
dc.typearticle*
dc.identifier.doi10.1016/j.fuel.2020.118260it
dc.identifier.scopus2-s2.0-85086395266it
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85086395266it
dc.relation.journalFUELit
dc.relation.firstpage118260it
dc.relation.volume278it
dc.description.numberofauthors6it
dc.description.internationalnoit
dc.contributor.countryITAit
dc.contributor.countryESPit
dc.type.miur262*
item.fulltextWith Fulltext-
item.openairetypearticle-
item.cerifentitytypePublications-
item.grantfulltextrestricted-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
crisitem.journal.journalissn0016-2361-
crisitem.journal.anceE068363-
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