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Title: Treatment of effluents from wool dyeing process by photo-Fenton at solar pilot plant
Authors: Hernández-Rodríguez, M. J. 
Fernández-Rodríguez, C. 
Doña-Rodríguez, J. M. 
González-Díaz, O. M. 
Zerbani, D.
Pérez Peña, J. 
UNESCO Clasification: 221001 Catálisis
330810 Tecnología de aguas residuales
Keywords: Fenton
Wool dyeing effluents
Solar pilot plant
Issue Date: 2014
Project: "Producción de Fotocatalizadores Nanoestructurados Por Procesos de Bajo Coste y Alta Productividad Para Descontaminación de Aguas Residuales: Nanobac 
Journal: Journal Of Environmental Chemical Engineering 
Abstract: The decolourization and mineralization of simulated wastewaters from wool dyeing tanks wereinvestigated by Fenton and photo-Fenton processes. Yellow, red and blue dyebaths with azo-type andanthraquinone dyes and additives were selected as colored effluents. Photo-Fenton reaction was muchmore efficient than the respective dark reaction under identical experimental conditions. The effect ofH2O2and Fe(II) dosage and fractional or initial addition of these reagents on the photo-mineralizationprocesses were studied and the optimal conditions found. Experiments at a pilot plant based oncompound parabolic collectors (CPCs) confirmed that, under optimal conditions, 100% of color removalwas obtained requiring low accumulated energy. No toxic effects on marine bacteriaVibrio fischeriwereobserved at the end of photo-Fenton treatment for all studied effluents. High concentrations of sodiumacetate are used as additive in the wool dying process. HPLC and TOC analysis of the effluents after photo-Fenton process confirmed that the remaining organic carbon is due to the presence of acetates. Theobtained results showed the feasibility of photo-Fenton process to achieve suitable water qualities forinternal reuse.
ISSN: 2213-3437
DOI: 10.1016/j.jece.2013.12.007
Source: Journal of Environmental Chemical Engineering [ISSN 2213-3437],v. 2, p. 163-171
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