Application of natural minerals for in-situ catalytic pyrolysis of orange peel
Natural mineral catalysts dolomite and clinoptilolite were evaluated in their calcined and non-calcined form for application in the catalytic in-situ pyrolysis of orange peel. Biomass pyrolysis improved when using calcined catalysts, with an increase in biogas yields (5.4 and 5.2% increase for dolom...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | México |
| Institución: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Journal of Applied Research and Technology |
| Idioma: | inglés |
| OAI Identifier: | oai:ojs2.localhost:article/736 |
| Acceso en línea: | https://jart.icat.unam.mx/index.php/jart/article/view/736 |
| Access Level: | acceso abierto |
| Palabra clave: | Pyrolysis Catalysis Natural Minerals Biomass |
| Sumario: | Natural mineral catalysts dolomite and clinoptilolite were evaluated in their calcined and non-calcined form for application in the catalytic in-situ pyrolysis of orange peel. Biomass pyrolysis improved when using calcined catalysts, with an increase in biogas yields (5.4 and 5.2% increase for dolomite and clinoptilolite, respectively), while non-calcined catalysts promoted higher condensate yields with an increment of 21.3 and 16.2% for dolomite and clinoptilolite compared with the calcined catalyst tests. Characterization of the condensate fraction with GC-MS showed formation of less oxygenated organic molecules in the pyrolysis tests, with an increase of 66% and 139% in the relative areas of organic compounds with an atomic content lower than 20%, when calcined dolomite and clinoptilolite were used, respectively, compared with the non-calcined catalysts. A prominent formation of Limonene was also observed. Syngas analysis with GC-TCD showed calcined clinoptilolite promoted higher hydrogen contents, while calcined dolomite showed increased CO and CO2 production at the highest pyrolysis temperatures. The presence of catalyst almost always pro-moted higher primary gas generation when compared with the non-catalytic test. The kinetic study of the catalytic pyrolysis of orange peel showed calcination of the natural minerals promotes a decrease in the apparent activation energy and an increase in the kinetic constant of the process, which shows the promising application of natural minerals as catalysts for biomass pyrolysis applications. |
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