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The Scientific World Journal
Volume 2013, Article ID 196470, 9 pages
http://dx.doi.org/10.1155/2013/196470
Research Article

A Novel Photocatalyst with Ferromagnetic Core Used for the Treatment of Olive Oil Mill Effluents from Two-Phase Production Process

1Chemical Engineering Department, University of Granada, 18071 Granada, Spain
2Molecular Biology and Biochemical Engineering Department, University Pablo de Olavide, 14013 Seville, Spain

Received 26 August 2013; Accepted 2 October 2013

Academic Editors: F. Oktar and Z. Zhang

Copyright © 2013 Javier Miguel Ochando-Pulido et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Photocatalytic degradation of olive oil mill wastewater from two-phase continuous centrifugation process was studied. A novel photocatalyst with ferromagnetic properties was characterized and investigated. The degradation capacity of the photocatalytic process of olive oil washing wastewater (OMW) and mixture of olives and olive oil (1 v/v) washing wastewaters (MOMW) was demonstrated. At lab-scale, the %COD removal and residence time () for MOMW and OMW were 58.4% ( h) and 21.4% ( h), respectively. On the other hand, at pilot scale, 23.4% , 19.2% total , and 28.1% total suspended were registered at the end of the UV/TiO2 process for OMW, whereas 58.3% , 27.5% total , and 25.0% total suspended for MOMW. Also, before the UV/TiO2 reaction, a pH-T flocculation operation as pretreatment was realized. The overall efficiency of the treatment process for MOMW was up to 91% of , in contrast with 33.2% of for OMW.