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Photochemical UV/TiO2 treatment of olive mill wastewater (OMW)

El Hajjouji, Houda and Barje, Farid and Pinelli, Eric and Bailly, Jean-René and Winterton, Peter and Revel, Jean-Claude and Hafidi, Mohamed and Richard, Claire Photochemical UV/TiO2 treatment of olive mill wastewater (OMW). (2008) Bioresource Technology, vol. 99 (n° 15). pp. 7264-7269. ISSN 0960-8524

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Official URL: http://dx.doi.org/10.1016/j.biortech.2007.12.054

Abstract

Olive mill wastewater (OMW) was treated by photocatalysis using TiO2 under UV irradiation on the laboratory scale. The chemical oxygen demand, the coloration at 330 nm, and the level of phenols all showed decreases which, after a 24-h treatment, reached 22%, 57% and 94%, respectively. The differences between these three values indicate the persistence of colourless, non-phenolic compounds. Application of the novel Fictitious Atomic-Group Separation method showed an increase in carbon oxidation state and confirmed that the attack primarily concerns, aromatic moieties. A fine spectroscopic study revealed the occurrence of three successive phases during the degradation process, thought to correspond to three different categories of molecules in the OMW and the presence of pectin compounds.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Bioresource Technology website : http://www.sciencedirect.com/science/journal/09608524
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université Blaise Pascal - UBP (FRANCE)
Other partners > University of Cadi Ayyad - UCAM (MOROCCO)
Laboratory name:
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Deposited By: Florence Amor

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