Ali Sdiri1, Boubaker Elleuch2, Hamed Ben Dhia1. 1. Laboratory of Water, Energy and Environment, National Engineering School, University of Sfax, P. Box 1173-3038, Sfax, Tunisia. 2. Laboratory of Water, Energy and Environment, National Engineering School, University of Sfax, P. Box 1173-3038, Sfax, Tunisia. boubaker.elleuch@enis.rnu.tn.