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Title: Factorial experimental design of imazalil-containing wastewater to be treated by Fenton-based processes
Authors: Santiago García, Dunia Esther 
Gonzalez-Diaz, Oscar M. 
Araña Mesa, F. J. 
Pulido Melián, Elisenda 
Pérez Peña, Jesús 
Doña-Rodríguez, J.M 
UNESCO Clasification: 23 Química
Keywords: Agro-industrial wastewater
Factorial design
Issue Date: 2018
Project: Eliminacion Fotocatalitica de Mezclas de Nox y Covs en Emisiones Gaseosas Con Ti02 y Oxidos Mixtos. 
Journal: Journal of Photochemistry and Photobiology A: Chemistry 
Abstract: Fenton-based processes have been studied for the mineralization and detoxification of wastewaters from the postharvest of fruit, which were contaminated with the fungicide imazalil (IMZ). For this purpose, studies were carried out in a simulated agro-industrial wastewater. Statistical design of experiments was used to assess the influence of IMZ, Fe(II) and H 2 O 2 concentration in the efficiency of the process. The most significant factor affecting the process was Fe(II). Higher mineralization was obtained with the photo-Fenton process when compared with the Fenton reaction. The optimized Fe(II) and H 2 O 2 for the mineralization of 50 mg L −1 IMZ were 21.5 and 127.5 mg L −1 , respectively. LC/MS/MS was used to identify the main products formed during the reaction and a degradation pathway was proposed. An operational cost of 2.06 €/m 3 was estimated for the treatment of 10 m 3 wastewater contaminated with IMZ.
ISSN: 1010-6030
DOI: 10.1016/j.jphotochem.2017.11.038
Source: Journal of Photochemistry and Photobiology A: Chemistry [ISSN 1010-6030], v. 353, p. 240-250
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