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Chemosphere

Title:		Ferric sludge derived from the process of water purification as an efficient catalyst and/or support for the removal of volatile organic compounds
Author(s):		Sanchis R; Dejoz A; Vazquez I; Vilarrasa-Garcia E; Jimenez-Jimenez J; Rodriguez-Castellon E; Lopez Nieto JM; Solsona B;
Address:		"Departament d'Enginyeria Quimica, Universitat de Valencia, C/ Dr. Moliner 50, 46100 Burjassot, Valencia, Spain. Departamento de Quimica Inorganica, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain. Departamento de Quimica Inorganica, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain. Electronic address: castellon@uma.es. Instituto de Tecnologia Quimica, Universitat Politecnica de Valencia-Consejo Superior de Investigaciones Cientificas, Avenida de los Naranjos s/n, 46022 Valencia, Spain. Departament d'Enginyeria Quimica, Universitat de Valencia, C/ Dr. Moliner 50, 46100 Burjassot, Valencia, Spain. Electronic address: benjamin.solsona@uv.es"
Journal Title:		Chemosphere
Year:		2019
Volume:		20181207
Issue:
Page Number:		286 - 295
DOI:		10.1016/j.chemosphere.2018.12.002
ISSN/ISBN:		1879-1298 (Electronic) 0045-6535 (Linking)
Abstract:		"Ferric chloride solutions are used as coagulants or flocculants in water treatment operations for human consumption. This treatment produces large amounts of clay-type solids formed mainly of montmorillonite with iron oxides and humic substances. This ferric sludge can be used as an efficient catalyst for the removal of volatile organic compounds (VOCs) by total oxidation. This waste isolated in the purification process has been activated by calcinations in air, characterized by several physicochemical techniques and employed as a catalyst for the removal by total oxidation of representative VOCs: toluene, propane and mixtures of toluene/propane with or without water. This ferric sludge has shown a catalytic activity one order of magnitude higher than that of a commercial iron oxide. This high activity has been related to the composition of the sludge (as it contains active metal oxides such as oxides of iron and manganese) and to the porous structure (leading to a reasonably high surface area). Moreover, it can be also used as a support for platinum, showing comparable (or even higher) catalytic activity than a similar platinum catalyst supported on conventional gamma-alumina. This work presents a double environmental perspective since the material employed as a catalyst is a waste sludge and the catalytic reaction studied deals about the elimination of pollutants"
Keywords:		Catalysis Ferric Compounds/chemistry Oxidation-Reduction Platinum/chemistry Sewage/*chemistry Volatile Organic Compounds/chemistry/*isolation & purification Water Purification/*methods Platinum Purification of water Sludge Support VOCs;
Notes:		"MedlineSanchis, Rut Dejoz, Ana Vazquez, Isabel Vilarrasa-Garcia, Enrique Jimenez-Jimenez, Jose Rodriguez-Castellon, Enrique Lopez Nieto, Jose M Solsona, Benjamin eng England 2018/12/14 Chemosphere. 2019 Mar; 219:286-295. doi: 10.1016/j.chemosphere.2018.12.002. Epub 2018 Dec 7"