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Artículo

Efficient removal of Orange G using Prussian Blue nanoparticlessupported over alumina

Doumic, Lucila InésIcon ; Salierno, Gabriel LeonardoIcon ; Cassanello Fernandez, Miryam CelesteIcon ; Haure, Patricia MonicaIcon ; Ayude, María AlejandraIcon
Fecha de publicación: 02/2015
Editorial: Elsevier
Revista: Catalysis Today
ISSN: 0920-5861
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería de Procesos Químicos; Química Coloidal

Resumen

Prussian Blue nanoparticles (PBNP) synthetized and adsorbed onto g-Al2O3 spheres were prepared and characterized by transition and scanning electron microscopy (TEM, SEM), energy dispersive X-ray spectroscopy (EDS) and sorptometry. Adsorption and reaction runs were performed using aqueous solutions of a model azo dye Orange G. The adsorption capacity of the PBNP/g-Al2O3 at 323 and 343 K at initial pH 3 and 6 was studied. The presence of PBNP increased the adsorption capacity of the support and this effect was more pronounced at initial pH=6. However, since the adsorbent life time was narrow and its regeneration quite difficult, PBNP/g-Al2O3was tested as a heterogeneous Fenton-like catalyst. The catalytic activity and stability for oxidation of Orange G were investigated in terms of discolouration, TOC and oxidant conversion. At the best operating condition studied (343 K and pH0= 3), complete dye discolouration and 60% of mineralization were attained while reaction largely overcomes adsorption. At this temperature the catalyst activity and its characteristics remained almost invariable during 9 cycles of 5 h each and iron leaching occurred in low extent.
Palabras clave: Heterogeneous Fenton-Like Oxidation , Prussian Blue Nanoparticles , Azo Dye , Alumina
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/7388
URL: http://www.sciencedirect.com/science/article/pii/S0920586114002958
DOI: http://dx.doi.org/10.1016/j.cattod.2014.03.064
Colecciones
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Articulos(OCA CIUDAD UNIVERSITARIA)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Doumic, Lucila Inés; Salierno, Gabriel Leonardo; Cassanello Fernandez, Miryam Celeste; Haure, Patricia Monica; Ayude, María Alejandra; Efficient removal of Orange G using Prussian Blue nanoparticlessupported over alumina; Elsevier; Catalysis Today; 240; PartA; 2-2015; 67-72
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