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dc.contributor.author | Gómez- González, Sandra Marcela | - |
dc.contributor.author | Cortés-Hernández, Héctor Fabio | - |
dc.contributor.author | Castellanos-Blanco, Nahury yamile | - |
dc.contributor.author | Rodríguez-Pérez, Jonhy Roberto | - |
dc.date.accessioned | 2022-07-18T21:26:57Z | - |
dc.date.available | 2022-07-18T21:26:57Z | - |
dc.date.issued | 2021-03-26 | - |
dc.identifier.issn | 0370-3908 | spa |
dc.identifier.uri | https://repositorio.accefyn.org.co/handle/001/1291 | - |
dc.description.abstract | Las nitroanilinas son compuestos ampliamente utilizados en pesticidas químicos, derivados de colorantes azoicos, productos farmacéuticos y aditivos para combustibles, entre otros. El estudio y aplicación de las nitroanilinas ha sido importante desde una perspectiva comercial e industrial; sin embargo, se ha encontrado que la eliminación de derivados de nitroanilina en cuerpos de agua en bajas concentraciones genera una alta contaminación. En este sentido, es importante el estudio de técnicas y procesos alternativos para su degradación. En el presente estudio, propusimos un proceso para la degradación de derivados de orto- y metanitroanilina usando catálisis heterogénea con TiO2. Creamos un reactor prototipo a escala de laboratorio y evaluamos la cantidad de TiO2, el valor de pH, y la concentración de oxidante (H2O2) para ambas nitroanilinas y pudimos determinar la cinética de degradación, analizar la recuperación del catalizador y establecer las condiciones óptimas de degradación. Encontramos que la cantidad de peróxido y el valor de pH representan el mayor porcentaje de degradación. Finalmente, se obtuvo una mineralización de 93.5% y 97.6% para los isómeros orto- y meta-nitroanilina, respectivamente, con una reacción de orden pseudo-cero para la degradación de ambos compuestos basada en el mecanismo de Langmuir-Hinshelwood. | spa |
dc.description.abstract | Nitroanilines are compounds widely used in chemical pesticides, derived from azo dyes, pharmaceutical products, and fuel additives, among others. The study and application of nitroanilines have been important from a commercial and industrial perspective; however, it has been found that the elimination of nitroaniline derivatives in water bodies at low concentrations generates high contamination. In this sense, the study of alternative techniques and processes for their degradation is important. In the present study, we proposed a process for the degradation of ortho- and metanitroaniline derivatives using heterogeneous catalysis with TiO2. We created a laboratory-scale prototype reactor and evaluated the amount of TiO2, the pH value, and the concentration of oxidant (H2O2) for both nitroanilines and we were able to determine the degradation kinetics, analyze the catalyst recovery, and establish the optimal degradation conditions. We found that the amount of peroxide and pH value account for the highest percentage of degradation. Finally, we obtained the mineralization of 93.5% and 97.6% for the ortho- and meta-nitroaniline isomers, respectively, with a pseudo-zero-order reaction for the degradation of both compounds based on the Langmuir-Hinshelwood mechanism. | eng |
dc.format.mimetype | application/pdf | spa |
dc.language.iso | spa | spa |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | spa |
dc.title | Fotocatálisis heterogénea para la degradación de orto- y metanitroanilina | spa |
dc.title | Heterogeneous photocatalysis for ortho- and metanitroaniline degradation | eng |
dc.type | Artículo de revista | spa |
dcterms.audience | Estudiantes,Profesores, Comunidad cientifica | spa |
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dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
dc.type.driver | info:eu-repo/semantics/article | spa |
dc.type.version | info:eu-repo/semantics/publishedVersion | spa |
dc.rights.creativecommons | Atribución 4.0 Internacional (CC BY 4.0) | spa |
dc.identifier.doi | https://doi.org/10.18257/raccefyn.1315 | - |
dc.subject.proposal | 2-nitroanilina | spa |
dc.subject.proposal | 2-nitroaniline | eng |
dc.subject.proposal | 3-nitroanilina | spa |
dc.subject.proposal | 3-nitroaniline | eng |
dc.subject.proposal | Fotodegradación | spa |
dc.subject.proposal | Photodegradation | eng |
dc.subject.proposal | TiO2 | spa |
dc.subject.proposal | TiO2 | eng |
dc.subject.proposal | Pseudo orden cero | spa |
dc.subject.proposal | Pseudo-zero-order. | eng |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | spa |
dc.relation.ispartofjournal | Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales | spa |
dc.relation.citationvolume | 45 | spa |
dc.relation.citationstartpage | 300 | spa |
dc.relation.citationendpage | 312 | spa |
dc.contributor.corporatename | Academia Colombiana de Ciencias Exactas, Fisicas y Naturales | spa |
dc.identifier.eissn | 2382-4980 | spa |
dc.relation.citationissue | 174 | spa |
dc.type.content | Text | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/ART | spa |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 | spa |
oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | spa |
Appears in Collections: | BA. Revista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales |
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