Pirólise de resíduos da cultura de pimenta-do-reino capixaba: atividade experimental problematizada (AEP)

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dc.contributor.advisor-co1Machado, Marta Albuquerque
dc.contributor.advisor-co1IDhttps://orcid.org/0000-0001-8335-3351
dc.contributor.advisor-co1Latteshttp://lattes.cnpq.br/5991893415892784
dc.contributor.advisor1Moura, Paulo Rogério Garcez de
dc.contributor.advisor1IDhttps://orcid.org/0000-0002-6893-3873
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/9815585530252572
dc.contributor.authorWelsing, Gyovana Lima
dc.contributor.authorIDhttps://orcid.org/0009-0000-8824-3282
dc.contributor.authorLatteshttp://lattes.cnpq.br/5822936503097126
dc.contributor.referee1Dalmaschio, Cleocir José
dc.contributor.referee1IDhttps://orcid.org/0000-0002-3773-5786
dc.contributor.referee1Latteshttp://lattes.cnpq.br/5209978120430790
dc.contributor.referee2Silva, André Luis Silva da
dc.contributor.referee2IDhttps://orcid.org/0000-0002-8245-9389
dc.contributor.referee2Latteshttp://lattes.cnpq.br/0808253492421363
dc.date.accessioned2025-05-22T13:05:24Z
dc.date.available2025-05-22T13:05:24Z
dc.date.issued2025-03-10
dc.description.abstractThis dissertation investigates the use of black pepper crop residues as promising lignocellulosic biomass, focusing on its physicochemical characteristics, energy potential and didactic application in the teaching of Chemistry. The biomass had a majority composition of carbon and oxygen (above 90%), in addition to 9.38% moisture, 79.43% volatiles, 11.18% ash and 9.39% fixed carbon. Pyrolysis was performed for bio-oil production, and the best yield (51.53%) was obtained at 550 °C, with a heating rate of 20 °C min⁻¹ and an N₂ flow of 100 mL min⁻¹. The bio-oils were chemically characterized, identifying compounds such as carboxylic acids, ketones and hydrocarbons, with potential energy and biotechnological application. The kinetic study, based on the Flynn–Ozawa–Wall, Kissinger–Akahira–Sunose and Friedman isoconversion models, indicated mean activation energies between 161–163 kJ mol⁻¹ and high thermal dependence; The use of catalyst did not significantly alter the kinetic patterns. In the field of teaching, the didactic intervention revealed advances in the understanding of the concepts of Chemical Kinetics, especially in the quantitative aspects. Indicators of metacognitive development showed gains in analytical (5.38–5.76), practical (4.68–5.28), and creative (5.06–5.53) capacities. The Grounded Theory revealed that factors such as the contextualization in sustainability, the availability of basic equipment and student engagement were determinant for the success of the proposal, although challenges such as lack of advanced equipment and reduced time for deepening were identified. The results show the potential of integration between science and education, promoting connections between academic knowledge and socio-environmental issues, and contributing to the training of critical professionals committed to sustainability
dc.description.resumoThis dissertation investigates the use of black pepper crop residues as promising lignocellulosic biomass, focusing on its physicochemical characteristics, energy potential and didactic application in the teaching of Chemistry. The biomass had a majority composition of carbon and oxygen (above 90%), in addition to 9.38% moisture, 79.43% volatiles, 11.18% ash and 9.39% fixed carbon. Pyrolysis was performed for bio-oil production, and the best yield (51.53%) was obtained at 550 °C, with a heating rate of 20 °C min⁻¹ and an N₂ flow of 100 mL min⁻¹. The bio-oils were chemically characterized, identifying compounds such as carboxylic acids, ketones and hydrocarbons, with potential energy and biotechnological application. The kinetic study, based on the Flynn–Ozawa–Wall, Kissinger–Akahira–Sunose and Friedman isoconversion models, indicated mean activation energies between 161–163 kJ mol⁻¹ and high thermal dependence; The use of catalyst did not significantly alter the kinetic patterns. In the field of teaching, the didactic intervention revealed advances in the understanding of the concepts of Chemical Kinetics, especially in the quantitative aspects. Indicators of metacognitive development showed gains in analytical (5.38–5.76), practical (4.68–5.28), and creative (5.06–5.53) capacities. The Grounded Theory revealed that factors such as the contextualization in sustainability, the availability of basic equipment and student engagement were determinant for the success of the proposal, although challenges such as lack of advanced equipment and reduced time for deepening were identified. The results show the potential of integration between science and education, promoting connections between academic knowledge and socio-environmental issues, and contributing to the training of critical professionals committed to sustainability
dc.description.sponsorshipA Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.formatText
dc.identifier.urihttp://repositorio.ufes.br/handle/10/19565
dc.languagepor
dc.language.isopt
dc.publisherUniversidade Federal do Espírito Santo
dc.publisher.countryBR
dc.publisher.courseMestrado em Química
dc.publisher.departmentCentro de Ciências Exatas
dc.publisher.initialsUFES
dc.publisher.programPrograma de Pós-Graduação em Química
dc.rightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectBiomassa lignocelulósica
dc.subject Extensão tecnológica
dc.subject Cinética química
dc.subjectBio-óleo
dc.subjectSustentabilidade
dc.subjectEducação em Química
dc.subjectLignocellulosic biomass
dc.subjectTechnological extension
dc.subjectChemical kinetics
dc.subjectBio-oil
dc.subjectSustainability
dc.subjectChemistry Education
dc.subject.cnpqQuímica
dc.titlePirólise de resíduos da cultura de pimenta-do-reino capixaba: atividade experimental problematizada (AEP)
dc.title.alternativePyrolysis of black pepper crop residues: problematized experimental activity (PEA)
dc.typemasterThesis
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