1. Wastewater Treatment Laboratory, Water Research and Technologies Center, University of Carthage, P.O. Box 273, Soliman 8020, Tunisia, Tel. ; Fax:
2. Faculty of Science of Bizerte, University of Carthage, Jarzouna 7000, Bizerte, Tunisia
3. Laboratory of Chemical Sciences of Rennes Sciences—Chemical and Process Engineering Team, MRU 6226 NCSR, ENSCR-11, Allée de Beaulieu, CS 508307-35708 Rennes, France