1. Department of Physics and Chemistry, UFR Sciences and Technologies , Iba Der THIAM University of Thies , Thies , Senegal
2. Laboratory of Water and Environmental Sciences and Technologies (LaSTEE) , Ecole Polytechnique de Thiès , Thiès , Senegal
3. Laboratory of Applied Microbiology and Industrial Engineering , Ecole Supérieure Polytechnique , Dakar , Senegal