Kinetic parameters of hydrothermal oxidation process on olive mill wastewater

Souad Chkoundali (1, 2) , Sahbi Alaya (2) , Jean-Claude Launay (1) , François Cansell (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 Faculté des Sciences de Gabès

Olive mill wastewater (OMW) was treated with a batch reactor up to 500°C and 25 MPa to determine the working pressure and temperature conditions to ensure OMW treatment. From these data, experiments were performed in tubular reactor, in a temperature range between 200 and 400°C, at 25 MPa. The Runge-Kutta algorithm method was used in order to obtain kinetic parameters for the hydrothermal oxidation of olive mill wastewater. The activation energy of the reaction was found equal to 48 kJ.mol1(regarding the chemical oxygen demand removal) with an oxygen order equal to 0.15.

Mots clés: Hydrothermal oxidation; Olive oil mill wastewater; Kinetics parameters; Runge-Kutta algorithm; Tubular reactor

Domaines: Matériaux; Génie des procédés

Souad Chkoundali, Sahbi Alaya, Jean-Claude Launay, François Cansell. Kinetic parameters of hydrothermal oxidation process on olive mill wastewater. Environmental Engineering Science, 2008, 25 (2), pp.131-138. ⟨10.1089/ees.2006.0102⟩. ⟨hal-00267175⟩