NDLI: The role of iron species on the turbidity of oxidized phenol solutions in a photo-Fenton system.

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The role of iron species on the turbidity of oxidized phenol solutions in a photo-Fenton system.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Villota, Natalia Camarero, Luis M. Lomas, Jose M. Perez-Arce, Jonatan
Description	Country affiliation: Spain Author Affiliation: Villota N ( a Department of Chemical and Environmental Engineering , Escuela Universitaria de Ingeniería Vitoria-Gasteiz, University of the Basque Country, UPV/EHU , Nieves Cano, 12, Vitoria-Gasteiz 01006 , Spain.)
Abstract	This work aims at establishing the contribution of the iron species to the turbidity of phenol solutions oxidized with photo-Fenton technology. During oxidation, turbidity increases linearly with time till a maximum value, according to a formation rate that shows a dependence of second order with respect to the catalyst concentration. Next, the decrease in turbidity shows the evolution of second-order kinetics, where the kinetics constant is inversely proportional to the dosage of iron, of order 0.7. The concentration of iron species is analysed at the point of maximum turbidity, as a function of the total amount of iron. Then, it is found that using dosages FeT=0-15.0âmg/L, the majority iron species was found to be ferrous ions, indicating that its concentration increases linearly with the dosage of total iron. This result may indicate that the photo-reaction of ferric ion occurs leading to the regeneration of ferrous ion. The results, obtained by operating with initial dosages FeT=15.0 and 25.0âmg/L, suggest that ferrous ion concentration decreases while ferric ion concentration increases in a complementary manner. This fact could be explained as a regeneration cycle of the iron species. The observed turbidity is generated due to the iron being added as a catalyst and the organic matter present in the system. Later, it was found that at the point of maximum turbidity, the concentration of ferrous ions is inversely proportional to the concentration of phenol and its dihydroxylated intermediates.
File Format	HTM / HTML
ISSN	09593330
Issue Number	13-16
Volume Number	36
e-ISSN	1479487X
Journal	Environmental Technology
Language	English
Publisher	Taylor & Francis
Publisher Date	2015-07-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Health Hydrogen Peroxide Chemistry Iron Models, Chemical Oxygen Phenol Computer Simulation Radiation Effects Kinetics Light Nephelometry And Turbidimetry Methods Oxidation-reduction Solutions Viscosity Water Pollutants, Chemical Isolation & Purification Journal Article
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Waste Management and Disposal Medicine Water Science and Technology

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