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Freshwater Purification by Vacuum Airlift Column Using Methyl Isobutyl Carbinol and Casein

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Document pages: 10 pages

Abstract: Water purification by foaming in a bubble column is a major challenge forresearch. It leads to thedevelopment of innovative airlift column operated under depression. Sea water clarificationby bubble column is well documented, but for freshwater remains insufficiently studied. Extractionof suspended clay particles in freshwater is carried out in an airlift column. The system used is underdepression and operates in a closed circuit, thanks to a recirculation tank. Methyl isobutyl carbinol (MIBC)and soluble casein are used as surfactants to allow extraction. Clay used is fine and ultra-ventilatedand a turbidimeter is used to measure turbidity. This study showed that the combined use of methyl isobutylcarbinol and casein in the airlift column makes it possible to completely clarifywater loaded with clay particles. A turbidity of less than 1 NTU is obtained after 30 minutesof extraction.

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