Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/45755
Title: Effect of inorganic ions on the photocatalytic treatment of agro-industrial wastewaters containing imazalil
Authors: Santiago, Dunia E. 
Arana, J. 
González-Díaz, O. 
Alemán-Dominguez, M. E. 
Acosta-Dacal, Andrea C. 
Fernández-Rodríguez, C. 
Pérez-Peña, J. 
Doña-Rodríguez, José M. 
UNESCO Clasification: 2210 Química física
Keywords: Wastewater
Photocatalysis
Imazalil
Banana postharvest
Ions
Issue Date: 2014
Project: "Producción de Fotocatalizadores Nanoestructurados Por Procesos de Bajo Coste y Alta Productividad Para Descontaminación de Aguas Residuales: Nanobac 
Journal: Applied Catalysis B: Environmental 
Abstract: In this work we studied the elimination, mineralization and detoxification of wastewaters from banana postharvest industries, contaminated with the fungicide imazalil, by means of heterogeneous advanced oxidation processes. We compared the activity of the commercial photocatalyst Evonik P25 and the lab-made EST-1023t in the degradation of imazalil in deionized water and in industrial wastewater. Results show an important negative water-matrix effect for wastewater treatment at acidic pH values due, mainly, to the presence of ions adsorbed onto the TiO2 photocatalyst surface. At pH 7 only bicarbonate anions and bacteria hindered the degradation and mineralization of imazalil. Mineralization of imazalil was completely inhibited by dissolved aluminium in concentrations as low as 5 mg L−1.
URI: http://hdl.handle.net/10553/45755
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2014.03.022
Source: Applied Catalysis B: Environmental [ISSN 0926-3373], v. 156-157, p. 284-292
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