A novel photocatalyst with ferromagnetic core used for the treatment of olive oil mill effluents from two-phase production process

Ochando Pulido, Javier Miguel; Hodaifa, Gassan; Víctor-Ortega, María Dolores; Martínez Férez, Antonio

doi:10.1155/2013/196470

OchandoPulido_FerromagneticCore.pdf (2.259Mb)

Identificadores

URI: http://hdl.handle.net/10481/32053

DOI: 10.1155/2013/196470

ISSN: 1537-744X

Exportar

Editorial

Hindawi Publishing Corporation

Materia

Waste water

Electrochemical oxidation

Organic matter

Degradation

Nanoparticles

Coagulation

Temperature

Membranes

TiO2

Date

2013

Referencia bibliográfica

Ochando-Pulido, J.M.; et al. A novel photocatalyst with ferromagnetic core used for the treatment of olive oil mill effluents from two-phase production process. Scientific World Journal, 2013: 196470 (2013). [http://hdl.handle.net/10481/32053]

Sponsorship

Funding by the European project PHOTOMEM (Contract no. FP7-SME-2011, Grant 262470) and the European project ETOILE (Contract no. FP7-SME-2007-1, Grant 222331) is acknowledged. The Spanish Ministry of Science and Innovation is also gratefully acknowledged for having funded the Projects CTQ2007-66178 and CTQ2010-21411.

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 (tau) for MOMW and OMW were 58.4% (tau = 2h) and 21.4% (tau = 3h), respectively. On the other hand, at pilot scale, 23.4% CODremoval, 19.2% total phenols(removal), and 28.1% total suspended solids(removal) were registered at the end of the UV/TiO2 process for OMW, whereas 58.3% CODremoval, 27.5% total phenols(removal), and 25.0% total suspended solids(removal) 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 CODremoval, in contrast with 33.2% of CODremoval for OMW.