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Effect of air to solid ratio in the clarification of yeast by colloidal gas aphrons

✍ Scribed by Mohd A. Hashim; Bhaskar Sen Gupta; Seetharam Vijaya Kumar; Roxane Lim; Song E. Lim; Chin C. Tan


Publisher
Wiley (John Wiley & Sons)
Year
1998
Tongue
English
Weight
328 KB
Volume
71
Category
Article
ISSN
0268-2575

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✦ Synopsis


A study on the clariÐcation of bakerÏs yeast suspension by Colloidal Gas Aphrons (CGA) employing a cationic surfactant, benzyl-dimethyl-hexadecylammonium chloride, is presented. The variables investigated were the CGA Ñowrate, air Ñowrate and the yeast concentration. A separation efficiency as high as 95% was achieved at the optimum conditions of air Ñowrate and feed concentration. The mechanism of particleÈbubble attachment was identiÐed and a simple model for the monolayer adsorption of yeast cells on the bubble surface derived.