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Artículo

Activation of Peroxymonosulfate and Persulfate by Metal Loaded Mesoporous Catalysts for Orange G Dye Degradation

Schlichter, SofiaIcon ; Dennehy, Mariana; Alvarez, MarianaIcon
Fecha de publicación: 23/12/2019
Editorial: Springer
Revista: Environmental Processes
ISSN: 2198-7491
e-ISSN: 2198-7505
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Químicas

Resumen

The main objective of this research was to study the catalytic activation of two different oxidants (potassium persulfate, PS and peroxymonosulfate, PMS) employing sulfate-based Advanced Oxidation Processes (AOPs). For this purpose, heterogeneous copper and cobalt catalysts were synthesized supported on MCM-41 mesoporous material. These catalysts were characterized by means of Atomic Absorption Spectroscopy (AA), X-ray diffraction (XRD), and Transmission Electron Microscopy (TEM). The metal charge of the catalysts ranged from 5% to 18%. The mesoporous arrangement was held after the metal loading and calcination, as shown by XRD patterns and TEM micrographs. The catalytic degradation of Orange G azo dye (Orange G: OG, disodium 7-hydroxy-8-[(E)-phenyldiazenyl]-1,3-naphthalenedisulfonate) was analysed, and the catalyst activities were determined in a batch reactor. The combination of PMS and higher metal-content Co-supported catalyst attained the best efficiency. In these conditions, the complete decolourization (100%) of the dye was achieved in the first minutes of reaction, while its mineralization reached after 4 h was 49%. Additionally, the catalytic activity of the Co/PMS system (a measure of the catalyst’s reusability) remained constant after three cycles of usage.
Palabras clave: ADVANCED OXIDATION PROCESSES , COBALT , COPPER , MCM-41 , ORANGE G , SULFATE RADICAL
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/120957
URL: http://link.springer.com/10.1007/s40710-019-00389-4
DOI: https://doi.org/10.1007/s40710-019-00389-4
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Articulos(INQUISUR)
Articulos de INST.DE QUIMICA DEL SUR
Citación
Schlichter, Sofia; Dennehy, Mariana; Alvarez, Mariana; Activation of Peroxymonosulfate and Persulfate by Metal Loaded Mesoporous Catalysts for Orange G Dye Degradation; Springer; Environmental Processes; 6; 4; 23-12-2019; 805-818
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