Study of the presence of PCDDs/PCDFs on zero-valent iron nanoparticles
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Título: | Study of the presence of PCDDs/PCDFs on zero-valent iron nanoparticles |
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Autor/es: | Calderón Roca, Blanca | Lundin, Lisa | Aracil, Ignacio | Fullana, Andres |
Grupo/s de investigación o GITE: | Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Química |
Palabras clave: | Toxicity | PCDD/F | Nanoparticles | nZVI | Iron chloride |
Área/s de conocimiento: | Ingeniería Química |
Fecha de publicación: | feb-2017 |
Editor: | Elsevier |
Cita bibliográfica: | Chemosphere. 2017, 169: 361-368. doi:10.1016/j.chemosphere.2016.11.074 |
Resumen: | Studies show that nanoscale zero-valent iron (nZVI) particles enhance the formation of chlorinated compounds such as polychlorinated dioxins and furans (PCDD/Fs) during thermal processes. However, it is unclear whether nZVI acts as a catalyst for the formation of these compounds or contains impurities, such as PCDD/Fs, within its structure. We analyzed the presence of PCDD/Fs in nZVI particles synthesized through various production methods to elucidate this uncertainty. None of the 2,3,7,8-substituted congeners were found in the commercially-produced nZVI, but they were present in the laboratory-synthesized nZVI produced through the borohydride method, particularly in particles synthesized from iron (III) chloride rather than from iron sulfate. Total PCDD/F WHO-TEQ concentrations of up to 35 pg/g were observed in nZVI particles, with hepta- and octa-chlorinated congeners being the most abundant. The reagents used in the borohydride method were also analyzed, and our findings suggest that FeCl3 effectively contains PCDD/Fs at concentrations that could explain the concentrations observed in the nZVI product. Both FeCl3 and nZVI showed a similar PCDD/F patterns with slight differences. These results suggest that PCDD/Fs might transfer from FeCl3 to nZVI during the production method, and thus, care should be taken when employing certain nZVI for environmental remediation. |
Patrocinador/es: | We would like to acknowledge the University of Alicante (EEBB-UA2013) for financing this study. |
URI: | http://hdl.handle.net/10045/63300 |
ISSN: | 0045-6535 (Print) | 1879-1298 (Online) |
DOI: | 10.1016/j.chemosphere.2016.11.074 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2016 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.chemosphere.2016.11.074 |
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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2017_Calderon_etal_Chemosphere_final.pdf | Versión final (acceso restringido) | 562,29 kB | Adobe PDF | Abrir Solicitar una copia |
2017_Calderon_etal_Chemosphere_preprint.docx | Preprint (acceso abierto) | 277,34 kB | Microsoft Office Word 2007 document | Abrir |
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