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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampGuirardello, Reginaldo-
dc.typeArtigopt_BR
dc.titleUse of the surface methodology in the thermodynamic evaluation of glycerol supercritical water gasification systemspt_BR
dc.contributor.authorVieira, Rodrigo Pereira-
dc.contributor.authorVidotti, Annamaria Dória Souza-
dc.contributor.authorGuirardello, Reginaldo-
dc.contributor.authorFreitas, Antonio Carlos Daltro de-
dc.subjectTermodinâmicapt_BR
dc.subjectGlicerolpt_BR
dc.subject.otherlanguageThermodynamicspt_BR
dc.subject.otherlanguageGlycerolpt_BR
dc.description.abstractThere is strong interest in the use of glycerol, a by-product of the biodiesel production, as feedstock for hydrogen production through reforming processes such as the supercritical water gasification reaction (SCWG). In this work, the response surface methodology was applied to the results of glycerol SCWG simulations, with the aim of analysing the conditions which enhance hydrogen formation. The simulations were carried out with the aid of the software GAMS 23.9.5, through a non-stoichiometric thermodynamic model based on Gibbs energy minimization. Those simulations presented the final compositions of the gas phase for a range of operational conditions. The three variables whose influence was analysed were: temperature (from 617.16 K to 1182.84 K), pressure (from 231.72 to 288.28 atm) and initial quantity of glycerol (from 0.0189 to 0.2311 mol). Initially, three central composite rotational designs (CCRD) were done, each one with two independent variables and two levels for each of those variables. The statistical analysis of the results was done with the aid of the software TIBCO® STATISTICA™, which presented the response surfaces, in addition to the mathematical expressions of the obtained models and their respective coefficients of determination. It was verified that the influence of the pressure on the quantity of hydrogen produced was not statistically significant. On the other hand, the temperature and the initial amount of glycerol had strong influence on the hydrogen formation. There was continuous increase in the hydrogen production as the temperature was risen, and higher amounts of that product were obtained when greater initial quantities of glycerol were used. Those tendencies were present in the results of the three 2² designs. The maximum quantity of hydrogen (0.9365 mol) was obtained in the simulation in which the following values were used for the independent variables: 1100 K for the temperature, 260 atm for the pressure and 0.2 mol for the initial amount of glycerolpt_BR
dc.relation.ispartofChemical engineering transactionspt_BR
dc.publisher.cityMilãopt_BR
dc.publisher.countryItáliapt_BR
dc.publisherAIDIC / Associazione Italiana Di Ingegneria Chimicapt_BR
dc.date.issued2019-
dc.date.monthofcirculationMay.pt_BR
dc.language.isoengpt_BR
dc.description.volume74pt_BR
dc.description.firstpage1225pt_BR
dc.description.lastpage1230pt_BR
dc.rightsFechadopt_BR
dc.sourceSCOPUSpt_BR
dc.identifier.eissn2283-9216pt_BR
dc.identifier.doi10.3303/CET1974205pt_BR
dc.identifier.urlhttps://www.cetjournal.it/index.php/cet/article/view/CET1974205pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsordocumentnumber402882/2016-4pt_BR
dc.date.available2020-06-09T14:50:15Z-
dc.date.accessioned2020-06-09T14:50:15Z-
dc.description.provenanceSubmitted by Susilene Barbosa da Silva (susilene@unicamp.br) on 2020-06-09T14:50:15Z No. of bitstreams: 0. Added 1 bitstream(s) on 2020-09-03T11:56:05Z : No. of bitstreams: 1 2-s2.0-85067022790.pdf: 886781 bytes, checksum: 3c69bbaad49fc8dce7fe25ad147208d1 (MD5)en
dc.description.provenanceMade available in DSpace on 2020-06-09T14:50:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2019en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/342990-
dc.contributor.departmentDepartamento de Desenvolvimento de Processos e Produtospt_BR
dc.contributor.unidadeFaculdade de Engenharia Químicapt_BR
dc.subject.keywordGasificationpt_BR
dc.identifier.source2-s2.0-85067022790pt_BR
dc.creator.orcid0000-0001-9458-0808pt_BR
dc.type.formArtigo de pesquisapt_BR
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