Flocculation of Kaolinite Suspensions in Water by Coconut Cream Casein

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 cas...

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Published inJournal of water resource and protection Vol. 3; no. 12; pp. 918 - 924
Main Authors Fatombi, Jacques K., Mbey, Jean-Aimé, Aminou, Taofiki, Lartiges, Bruno, Topanou, Nikita, Barres, Odile, Josse, Roger G.
Format Journal Article
LanguageEnglish
Published Scientific research 2011
Subjects
Applied geology
Cocos nucifera
Earth Sciences
Geochemistry
Mineralogy
Petrography
Sciences of the Universe
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Summary: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 super( -1) and 1653 cm super( -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.
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ISSN:1945-3094
1945-3108
DOI:10.4236/jwarp.2011.312102