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Microalgae pyrolysis under isothermal and non-isothermal conditions

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tecnologías Apropiadas para el Desarrollo Sosteniblees
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Mecánica de Fluidoses
dc.contributor.authorCano Pleite, Eduardo
dc.contributor.authorRubio Rubio, Mariano
dc.contributor.authorGarcía Hernando, Néstor
dc.contributor.authorSoria Verdugo, Antonio
dc.contributor.funderComunidad de Madrides
dc.date.accessioned2021-04-26T10:31:03Z
dc.date.available2022-10-01T23:00:05Z
dc.date.issued2020-10
dc.description.abstractThe present work analyzes and compares the non-isothermal and isothermal pyrolysis processes of two different kinds of microalgae: Spirulina platensis and Chlorella pyrenoidosa. The non-isothermal pyrolysis process is carried out in a Thermogravimetric Analyzer (TGA), whereas a macro-TGA bubbling fluidized bed reactor is used for the isothermal pyrolysis reaction. The simplified Distributed Activation Energy Model (DAEM) is employed to derive the kinetic parameters of the reaction in the TGA, i.e., the pre-exponential factor and the activation energy. A consecutive reaction, first-order pyrolysis model with three competitive pseudo-components for the released pyrolysis vapors is proposed to evaluate the isothermal pyrolysis experiments conducted in a macro-TGA bubbling fluidized bed. The fluidized bed experimental setup allows measuring the real-time mass evolution during the microalgae pyrolysis process, which could be used to obtain the kinetic parameters of the different reactions of which the consecutive reaction model is comprised. The activation energies of the reactions using this isothermal pyrolysis model are in good agreement, both qualitatively and quantitatively, with those obtained from the non-isothermal pyrolysis measurements run in the TGA. A quantitative comparison reveals that the TGA measurements could be employed to provide a useful first estimation of the activation energy of the isothermal pyrolysis process in the bubbling fluidized bed. Qualitatively, the Differential Thermogravimetric (DTG) curves obtained from the thermogravimetric analysis revealed the presence of three peaks in the Chlorella pyrenoidosa DTG curve and two peaks in the Spirulina platensis DTG curve, which is in agreement with the number of pseudo-component reactions in the isothermal pyrolysis model. This indicates the capability of the non-isothermal pyrolysis tests in a TGA to predict the number of reactions required to characterize the isothermal pyrolysis process.en
dc.format.extent11
dc.identifier.bibliographicCitationCano-Pleite, E., Rubio-Rubio, M., García-Hernando, N. & Soria-Verdugo, A. (2020). Microalgae pyrolysis under isothermal and non-isothermal conditions. Algal Research, 51, 102031.en
dc.identifier.doihttps://doi.org/10.1016/j.algal.2020.102031
dc.identifier.issn2211-9264
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue102031
dc.identifier.publicationlastpage11
dc.identifier.publicationtitleAlgal Researchen
dc.identifier.publicationvolume51
dc.identifier.urihttps://hdl.handle.net/10016/32482
dc.identifier.uxxiAR/0000027105
dc.language.isoeng
dc.publisherElsevieren
dc.relation.projectIDComunidad de Madrid. 2019-T2/AMB-15938es
dc.rights© 2020 Elsevier B.V.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaEnergías Renovableses
dc.subject.otherChlorella pyrenoidosaen
dc.subject.otherSpirulina platensisen
dc.subject.otherFluidized beden
dc.subject.otherMicroalgaeen
dc.subject.otherPyrolysis kineticsen
dc.subject.otherThermogravimetric analysisen
dc.titleMicroalgae pyrolysis under isothermal and non-isothermal conditionsen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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