A novel photocatalyst with ferromagnetic core used for the treatment of olive oil mill effluents from two-phase production process.
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 (τ) for MOMW and OMW were 58.4% (τ = 2 h) and 21.4% (τ = 3 h), respectively. On the other hand, at pilot scale, 23.4% COD(removal), 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% COD(removal), 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 COD(removal), in contrast with 33.2% of COD(removal) for OMW.
Chemical Engineering Department, University of Granada, 18071 Granada, Spain.
Javier Miguel
JM
Ochando-Pulido
Molecular Biology and Biochemical Engineering Department, University Pablo de Olavide, 14013 Seville, Spain.
Gassan
G
Hodaifa
Chemical Engineering Department, University of Granada, 18071 Granada, Spain.
María Dolores
MD
Víctor-Ortega
Chemical Engineering Department, University of Granada, 18071 Granada, Spain.
Antonio
A
Martínez-Ferez
D057919:Biological Oxygen Demand Analysis; D002384:Catalysis; D007220:Industrial Waste; D000069463:Olive Oil; D010777:Photochemistry / Q000379:methods*; D010938:Plant Oils; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater
D007220:Industrial Waste; D000069463:Olive Oil; D010938:Plant Oils; D014025:Titanium; D062065:Wastewater; C009495:titanium dioxide