Degradation of organic matter in olive-oil mill wastewater through homogeneous Fenton-like reaction

作者：Martinez Nieto Leopoldo; Hodaifa Gassan^*; Rodriguez Salvador; Gimenez Jose A; Ochando Javier

来源：Chemical Engineering Journal, 2011, 173(2): 503-510.

DOI：10.1016/j.cej.2011.08.022

• Fenton's reagent
• Oxidation
• COD
• Phenols compounds
• Kinetics study
• Olive-oil mill wastewater

The degradation of organic matter present in olive-oil mill wastewater from two-phase olive-oil extraction process was carried out by chemical oxidation reaction. It was shown that organic matter is efficiently degraded through a Fenton-like reaction using FeCl(3) as catalyst in the presence of hydrogen peroxide. Oxidation was carried out in a batch reactor with controlled temperature. Operating at pH 3.0. H(2)O(2) concentration = 100 g dm(-3), [FeCl(3)]/[H(2)O(2)] ratio = 0.04, and ambient temperature (281-285 K). 92.6% of chemical oxygen demand and 99.8% of total phenols were removed. Kinetics can be described by a two step first order model. The kinetic parameters at ambient temperature and pH 3 were calculated. In the temperature range 278-313 K, the best performance was obtained at 303 K. The experiments performed at different temperatures allowed to calculate the apparent activation energy E(a) = 8.7 kJ mol(-1).

• 出版日期2011-9-15