Pollutant emissions during pyrolysis and combustion of waste printed circuit boards, before and after metal removal
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Título: | Pollutant emissions during pyrolysis and combustion of waste printed circuit boards, before and after metal removal |
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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: | Printed circuit board | WEEE | Pyrolysis | Combustion | Dioxin |
Área/s de conocimiento: | Ingeniería Química |
Fecha de publicación: | 15-nov-2014 |
Editor: | Elsevier |
Cita bibliográfica: | Science of The Total Environment. 2014, 499: 27-35. doi:10.1016/j.scitotenv.2014.08.039 |
Resumen: | The constant increase in the production of electronic devices implies the need for an appropriate management of a growing number of waste electrical and electronic equipment. Thermal treatments represent an interesting alternative to recycle this kind of waste, but particular attention has to be paid to the potential emissions of toxic by-products. In this study, the emissions from thermal degradation of printed circuit boards (with and without metals) have been studied using a laboratory scale reactor, under oxidizing and inert atmosphere at 600 and 850 °C. Apart from carbon oxides, HBr was the main decomposition product, followed by high amounts of methane, ethylene, propylene, phenol and benzene. The maximum formation of PAHs was found in pyrolysis at 850 °C, naphthalene being the most abundant. High levels of 2-, 4-, 2,4-, 2,6- and 2,4,6-bromophenols were found, especially at 600 °C. Emissions of PCDD/Fs and dioxin-like PCBs were quite low and much lower than that of PBDD/Fs, due to the higher bromine content of the samples. Combustion at 600 °C was the run with the highest PBDD/F formation: the total content of eleven 2,3,7,8-substituted congeners (tetra- through heptaBDD/Fs) was 7240 and 3250 ng WHO2005-TEQ/kg sample, corresponding to the sample with and without metals, respectively. |
Patrocinador/es: | Support for this work was provided by the CTQ2013-41006 project from the Ministry of Education and Science (Spain) and the PROMETEO/2009/043/FEDER project from the Valencian Community Government (Spain). |
URI: | http://hdl.handle.net/10045/44587 |
ISSN: | 0048-9697 (Print) | 1879-1026 (Internet) |
DOI: | 10.1016/j.scitotenv.2014.08.039 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2014 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.scitotenv.2014.08.039 |
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_STE-Pollutant_emissions.pdf | Versión final (acceso restringido) | 631,02 kB | Adobe PDF | Abrir Solicitar una copia |
Ortuno_14_STE-Pollutant_emissions_preprint.pdf | Preprint (acceso abierto) | 4,02 MB | Adobe PDF | Abrir Vista previa |
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