Captura de CO2 de gases de combustão utilizando óxido de cálcio

Detalhes bibliográficos
Autor(a) principal: Silva, Juliana Alves da
Data de Publicação: 2018
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UFSCAR
Texto Completo: https://repositorio.ufscar.br/handle/ufscar/9817
Resumo: Calcium oxide (CaO) based materials were prepared, characterized and subjected to cyclic carbonation and decomposition reactions in order to evaluate the carbon dioxide capture capacity (CO2) and the stability of the material. The sol-gel method was used for the synthesis of pure CaO and wet mixing and impregnation methods for incorporating CaO into an additive Al2O3, ZrO2, and La2O3. The materials were characterized by X-ray diffraction, temperature programmed desorption, thermogravimetric analysis, scanning electron microscopy and adsorption of N2. The CO2 capture was performed in a looping reaction using thermobalance and fixed bed reactor, with carbonation at 700 °C in CO2 flow and decomposition of calcium carbonate at 800 °C in pure N2 flow. The results showed that pure CaO has decreased the CO2 capture capacity after the first reaction cycle. The materials synthesized by wet mixing showed higher CO2 capture efficiency and stability than the materials prepared by impregnation. Among the materials synthesized by wet mixing, 90CaO10Al2O3, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3) are the most stable reactivity and highest CO2 capture capacity. The 90CaO10Al2O3 had a CO2 capture capacity of 0.71 g-CO2/g-material up to six cycles, meanwhile, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3) showed CO2 capture capacity up to six cycles of 0.37 and 0.32 g-CO2/g-material, respectively. However, the materials with the highest amount of additive, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3), were still the most stable. For the materials prepared by wet mixing, the results of the characterizations suggest that the addiction of additives decreased significantly the amount of unreacted CaO and allowed the accessibility of the CO2 to CaO.
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spelling Silva, Juliana Alves daSantos, João Batista Oliveira doshttp://lattes.cnpq.br/0285313473901330http://lattes.cnpq.br/96111881689725440a6b3a8e-852e-402d-b84c-2099ca3515aa2018-04-26T00:23:40Z2018-04-26T00:23:40Z2018-02-23SILVA, Juliana Alves da. Captura de CO2 de gases de combustão utilizando óxido de cálcio. 2018. Dissertação (Mestrado em Engenharia Química) – Universidade Federal de São Carlos, São Carlos, 2018. Disponível em: https://repositorio.ufscar.br/handle/ufscar/9817.https://repositorio.ufscar.br/handle/ufscar/9817Calcium oxide (CaO) based materials were prepared, characterized and subjected to cyclic carbonation and decomposition reactions in order to evaluate the carbon dioxide capture capacity (CO2) and the stability of the material. The sol-gel method was used for the synthesis of pure CaO and wet mixing and impregnation methods for incorporating CaO into an additive Al2O3, ZrO2, and La2O3. The materials were characterized by X-ray diffraction, temperature programmed desorption, thermogravimetric analysis, scanning electron microscopy and adsorption of N2. The CO2 capture was performed in a looping reaction using thermobalance and fixed bed reactor, with carbonation at 700 °C in CO2 flow and decomposition of calcium carbonate at 800 °C in pure N2 flow. The results showed that pure CaO has decreased the CO2 capture capacity after the first reaction cycle. The materials synthesized by wet mixing showed higher CO2 capture efficiency and stability than the materials prepared by impregnation. Among the materials synthesized by wet mixing, 90CaO10Al2O3, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3) are the most stable reactivity and highest CO2 capture capacity. The 90CaO10Al2O3 had a CO2 capture capacity of 0.71 g-CO2/g-material up to six cycles, meanwhile, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3) showed CO2 capture capacity up to six cycles of 0.37 and 0.32 g-CO2/g-material, respectively. However, the materials with the highest amount of additive, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3), were still the most stable. For the materials prepared by wet mixing, the results of the characterizations suggest that the addiction of additives decreased significantly the amount of unreacted CaO and allowed the accessibility of the CO2 to CaO.Materiais a base de óxido de cálcio (CaO) foram preparados, caracterizados e submetidos a reações cíclicas de carbonatação e decomposição com o objetivo de avaliar a capacidade de captura de dióxido de carbono (CO2) e a estabilidade do material. CaO puro foi preparado pelo método sol-gel e CaO modificado com Al2O3, ZrO2 e La2O3 foram preparados pelos métodos de impregnação ou mistura úmida. Os materiais foram caracterizados por difração de raios-X, dessorção à temperatura programada, análise termogravimétrica, microscopia eletrônica de varredura e adsorção de N2. As medidas de captura de CO2 foram realizadas de maneira cíclica usando uma termobalança ou um reator de leito-fixo, sendo a carbonatação conduzida a 700 ºC em fluxo de CO2 e a decomposição do carbonato de cálcio realizada a 800 ºC em fluxo de N2 puro. Os resultados mostraram uma queda na capacidade de captura de CO2 utilizando o CaO puro, logo depois do primeiro ciclo de reação. Os materiais sintetizados por mistura úmida foram mais estáveis e apresentaram maior capacidade de captura de CO2 que os materiais sintetizados por impregnação. Entre os materiais sintetizados por mistura úmida, tem-se 90CaO10Al2O3, 50CaO50Al2O3 e 50CaO50(Al2O3+La2O3) como os materiais mais estáveis e de elevada capacidade de captura de CO2, sendo que 90CaO10Al2O3 teve capacidade de captura de CO2 de 0,71 g-CO2/g-material depois de seis ciclos, enquanto que 50CaO50Al2O3 e 50CaO50(Al2O3+La2O3) apresentaram capacidade de captura de CO2 depois de seis ciclos de 0,37 e 0,32 g-CO2/g-material, respectivamente. Os materiais com maior quantidade de aditivo, 50CaO50Al2O3 e 50CaO50(Al2O3+La2O3), foram os mais estáveis. Os resultados das caracterizações sugerem que os aditivos adicionados ao CaO pelo método de mistura úmida diminuíram significativamente a quantidade de CaO não reagido e ao mesmo tempo permitiram a acessibilidade do CO2 ao CaO.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq: 132737/2016-7porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Engenharia Química - PPGEQUFSCarGás de combustãoÓxido de cálcioCaptura de CO2Capture CO2Flue gasCalcium oxideENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICACaptura de CO2 de gases de combustão utilizando óxido de cálcioCO2 capture of flue gas using calcium oxideinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisOnline600600b0f770d9-8ecf-4996-92f4-5cf7c7c04ef0info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARLICENSElicense.txtlicense.txttext/plain; charset=utf-81957https://repositorio.ufscar.br/bitstream/ufscar/9817/3/license.txtae0398b6f8b235e40ad82cba6c50031dMD53ORIGINALSILVA_Juliana_2018.pdfSILVA_Juliana_2018.pdfapplication/pdf3210753https://repositorio.ufscar.br/bitstream/ufscar/9817/4/SILVA_Juliana_2018.pdf260f13729a783ba7015996c5727271a7MD54TEXTSILVA_Juliana_2018.pdf.txtSILVA_Juliana_2018.pdf.txtExtracted texttext/plain129855https://repositorio.ufscar.br/bitstream/ufscar/9817/5/SILVA_Juliana_2018.pdf.txtf45f0264c0378b878e3a174537cd8d7dMD55THUMBNAILSILVA_Juliana_2018.pdf.jpgSILVA_Juliana_2018.pdf.jpgIM Thumbnailimage/jpeg5369https://repositorio.ufscar.br/bitstream/ufscar/9817/6/SILVA_Juliana_2018.pdf.jpg1e6a8d23b634bb9e1536210029b0b87eMD56ufscar/98172023-09-18 18:31:42.839oai:repositorio.ufscar.br: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Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:31:42Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false
dc.title.por.fl_str_mv Captura de CO2 de gases de combustão utilizando óxido de cálcio
dc.title.alternative.eng.fl_str_mv CO2 capture of flue gas using calcium oxide
title Captura de CO2 de gases de combustão utilizando óxido de cálcio
spellingShingle Captura de CO2 de gases de combustão utilizando óxido de cálcio
Silva, Juliana Alves da
Gás de combustão
Óxido de cálcio
Captura de CO2
Capture CO2
Flue gas
Calcium oxide
ENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA
title_short Captura de CO2 de gases de combustão utilizando óxido de cálcio
title_full Captura de CO2 de gases de combustão utilizando óxido de cálcio
title_fullStr Captura de CO2 de gases de combustão utilizando óxido de cálcio
title_full_unstemmed Captura de CO2 de gases de combustão utilizando óxido de cálcio
title_sort Captura de CO2 de gases de combustão utilizando óxido de cálcio
author Silva, Juliana Alves da
author_facet Silva, Juliana Alves da
author_role author
dc.contributor.authorlattes.por.fl_str_mv http://lattes.cnpq.br/9611188168972544
dc.contributor.author.fl_str_mv Silva, Juliana Alves da
dc.contributor.advisor1.fl_str_mv Santos, João Batista Oliveira dos
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/0285313473901330
dc.contributor.authorID.fl_str_mv 0a6b3a8e-852e-402d-b84c-2099ca3515aa
contributor_str_mv Santos, João Batista Oliveira dos
dc.subject.por.fl_str_mv Gás de combustão
Óxido de cálcio
Captura de CO2
topic Gás de combustão
Óxido de cálcio
Captura de CO2
Capture CO2
Flue gas
Calcium oxide
ENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA
dc.subject.eng.fl_str_mv Capture CO2
Flue gas
Calcium oxide
dc.subject.cnpq.fl_str_mv ENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA
description Calcium oxide (CaO) based materials were prepared, characterized and subjected to cyclic carbonation and decomposition reactions in order to evaluate the carbon dioxide capture capacity (CO2) and the stability of the material. The sol-gel method was used for the synthesis of pure CaO and wet mixing and impregnation methods for incorporating CaO into an additive Al2O3, ZrO2, and La2O3. The materials were characterized by X-ray diffraction, temperature programmed desorption, thermogravimetric analysis, scanning electron microscopy and adsorption of N2. The CO2 capture was performed in a looping reaction using thermobalance and fixed bed reactor, with carbonation at 700 °C in CO2 flow and decomposition of calcium carbonate at 800 °C in pure N2 flow. The results showed that pure CaO has decreased the CO2 capture capacity after the first reaction cycle. The materials synthesized by wet mixing showed higher CO2 capture efficiency and stability than the materials prepared by impregnation. Among the materials synthesized by wet mixing, 90CaO10Al2O3, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3) are the most stable reactivity and highest CO2 capture capacity. The 90CaO10Al2O3 had a CO2 capture capacity of 0.71 g-CO2/g-material up to six cycles, meanwhile, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3) showed CO2 capture capacity up to six cycles of 0.37 and 0.32 g-CO2/g-material, respectively. However, the materials with the highest amount of additive, 50CaO50Al2O3 and 50CaO50(Al2O3+La2O3), were still the most stable. For the materials prepared by wet mixing, the results of the characterizations suggest that the addiction of additives decreased significantly the amount of unreacted CaO and allowed the accessibility of the CO2 to CaO.
publishDate 2018
dc.date.accessioned.fl_str_mv 2018-04-26T00:23:40Z
dc.date.available.fl_str_mv 2018-04-26T00:23:40Z
dc.date.issued.fl_str_mv 2018-02-23
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.citation.fl_str_mv SILVA, Juliana Alves da. Captura de CO2 de gases de combustão utilizando óxido de cálcio. 2018. Dissertação (Mestrado em Engenharia Química) – Universidade Federal de São Carlos, São Carlos, 2018. Disponível em: https://repositorio.ufscar.br/handle/ufscar/9817.
dc.identifier.uri.fl_str_mv https://repositorio.ufscar.br/handle/ufscar/9817
identifier_str_mv SILVA, Juliana Alves da. Captura de CO2 de gases de combustão utilizando óxido de cálcio. 2018. Dissertação (Mestrado em Engenharia Química) – Universidade Federal de São Carlos, São Carlos, 2018. Disponível em: https://repositorio.ufscar.br/handle/ufscar/9817.
url https://repositorio.ufscar.br/handle/ufscar/9817
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dc.publisher.none.fl_str_mv Universidade Federal de São Carlos
Câmpus São Carlos
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dc.publisher.initials.fl_str_mv UFSCar
publisher.none.fl_str_mv Universidade Federal de São Carlos
Câmpus São Carlos
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