De novo synthesis of brominated dioxins and furans
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Título: | De novo synthesis of brominated dioxins and furans |
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Autor/es: | Ortuño García, Nuria | Conesa, Juan A. | Moltó Berenguer, Julia | Font, Rafael |
Grupo/s de investigación o GITE: | Residuos, Pirólisis y Combustión |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos |
Palabras clave: | PBDD/Fs | De novo synthesis |
Área/s de conocimiento: | Ingeniería Química |
Fecha de publicación: | 19-jun-2014 |
Editor: | American Chemical Society |
Cita bibliográfica: | Environmental Science & Technology. 2014, 48(14): 7959-7965. doi:10.1021/es501818d |
Resumen: | On the basis of laboratory experiments with model mixtures (active carbon + CuBr2 at different loads), this work studies the formation of polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) by de novo synthesis. For the different samples, the temperature of the maximum carbon oxidation rate was determined by thermogravimetric analysis, and a kinetic model was proposed for the degradation of the materials in an oxidizing atmosphere (synthetic air). The effect of the addition of different amounts of CuBr2 was studied, finding that its presence accelerates the degradation of the carbonaceous structure in the presence of oxygen. The thermal degradation of the samples in air is satisfactorily described by a first-order single-reaction model. In addition, combustion runs of one of the mixtures (consisting of activated carbon + 50 wt % CuBr2, pyrolyzed at 700 °C) were performed in a quartz horizontal laboratory furnace. The analysis of the emissions and the solid residue proved the formation of brominated dioxins and furans at 300, 400, and 500 °C, with a maximum yield at 300 °C (91.7 ng/g of total PBDD/Fs) and a higher bromination degree with increasing temperature. |
Patrocinador/es: | Support for this work was provided by the Generalitat Valenciana (Spain), Research Project Prometeo/2009/043/FEDER, and the Spanish Ministry of Science and Technology (MCT), Research Project CTQ2008-05520. |
URI: | http://hdl.handle.net/10045/44586 |
ISSN: | 0013-936X (Print) | 1520-5851 (Online) |
DOI: | 10.1021/es501818d |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2014 American Chemical Society |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1021/es501818d |
Aparece en las colecciones: | INV - REMAN - Artículos de Revistas INV - I4CE - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Ortuno_14_EST-De_novo_synthesis_PBDD-F_final.pdf | Versión final (acceso restringido) | 298,42 kB | Adobe PDF | Abrir Solicitar una copia |
Ortuno_14_EST-De_novo_synthesis_PBDD-F.pdf | Accepted Manuscript (acceso abierto) | 1,07 MB | Adobe PDF | Abrir Vista previa |
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