1. Department of Process Engineering Faculty of Technology University 20 August 1955 Skikda 21000 Algeria
2. Laboratoire de Recherche sur la Physico‐Chimie des Surfaces et Interfaces University 20 August 1955 Skikda 21000 Algeria
3. Department of Natural Sciences Faculty of Sciences University 20 August 1955 Skikda 21000 Algeria