Characterization of Ain M’Dheker clay deposits for sunflower oil and Acid Black 194 dye clarification

  • Salima Chakroun
  • Wafa Mechti
  • Mongi Herchi
  • Mohamed Essghaier Gaied
ICIEM 2016
Part of the following topical collections:
  1. Water Resource Management for Sustainable Development


Three mixtures (M1, M2, and M3) of the Eocene clay deposits were collected from Ain M’Dheker (Enfidha, Tunisia). These mixtures have been treated by hydrochloric acid in order to improve their physico-chemical characteristics. Optimum conditions for activation were conducted by varying several parameters such as the acid concentration, time, and temperature activation. The activation condition effect on surface area is studied. A representative raw (M3) and activated (AM3) mixtures were used in industrial application: Sunflower oil and Black 194 dyes (textile waste). M3 and AM3 were used to leach sunflower oil by varying the clay amount introduced. Results of the bleaching power of used samples were compared to that found by commercial bentonite imported from Germany (Tonsil), having a surface area of 725 m2/g. Indeed, an amount of 1% of AM3 gives a 60% decolorization similar to that found by commercial clay. Also, the ability of raw and activated clay to remove the dye (Acid Black 194) from effluent has been studied firstly at different pH and in second time by varying the adsorbent amount. Then, an amount of 0.025 g is sufficient to give a higher adsorption capacity for M3 than AM3. Consequently, Ain M’Dheker clay deposits can be use in other environmental application even without any treatment.


Tunisian clays Acid activation Characterization Adsorption Sunflower oil Acid Black 194 dyes 


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Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  • Salima Chakroun
    • 1
  • Wafa Mechti
    • 1
  • Mongi Herchi
    • 1
  • Mohamed Essghaier Gaied
    • 2
  1. 1.Faculté des Sciences de Tunis, Département des Sciences de la terre, Laboratoire des Ressources Minérales et EnvironnementUniversity of Tunis El ManarTunisTunisia
  2. 2.Institut Supérieur des beaux Arts de SousseSousseTunisia

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