Publications scientifiques
Jacques K. Fatombi
Autres affiliations : Université d'Abomey-Calavi
Jean Aimé Mbey
Autres affiliations : Laboratoire Interdisciplinaire des Environnements Continentaux
Odile Barrès
Autres affiliations : Université de Lorraine
Taofiki Aminou* (Auteur correspondant)
Nikita Topanou
R. Josse
Bruno Lartiges
Autres affiliations : Centre de Géosciences · Géosciences Environnement Toulouse
Journal of Water Resource and Protection
The flocculation of kaolinite colloidal particles was carried out at pH = 6 in suspension of initial turbidity varying between 24 NTU and 102 NTU by a casein extracted from Cocos nucifera cream. During Jar-test essays, 90% to 99% of colloids were eliminated in the sediments. The optimal doses of casein used depend on the initial colloids concentrations of the suspension and were found to be 60 mg/L and 100 mg/L respectively for suspensions having turbidity of 24 NTU and 102 NTU. The corresponding residual turbidity are respectively 2.80 NTU and 10.22 NTU for clarified water. The structural analysis of the freeze-dried sediments by FTIR shows sharp adsorption bands at 1558 cm–1 and 1653 cm–1, indicating the presence of casein in the sediment. The flocculation process between the particles of kaolinite and the coconut casein is adsorption and bridging.
