Particle-bubble attachment in yeast flotation by colloidal gas aphrons

M. A. Hashim; S. V. Kumar; B. Sen Gupta

doi:10.1007/s004490050740

Particle-bubble attachment in yeast flotation by colloidal gas aphrons

M. A. Hashim, S. V. Kumar, B. Sen Gupta

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

Flotation of microorganisms by colloidal gas aphrons (CGAs) is recognised as an inexpensive and effective method of separation. CGAs are micro-sized gas bubbles of 25 μm in average diameter and each is encapsulated in an aqueous shell of surfactant solution. High flotation efficiency can be achieved when colloidal gas aphrons are employed in a dilute suspension containing yeast cells. Under certain experimental conditions, the adsorption of yeast on the aphrons follows the Langmuir model. With changes in the pH and feed concentration, the mechanism of bubble attachment and detachment changes from a monolayer to a multilayer adsorption.

Original language	English
Pages (from-to)	333-336
Number of pages	4
Journal	Bioprocess Engineering
Volume	22
Issue number	4
DOIs	https://doi.org/10.1007/s004490050740
Publication status	Published - Apr 2000

ASJC Scopus subject areas

Biotechnology
Applied Microbiology and Biotechnology

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abstract = "Flotation of microorganisms by colloidal gas aphrons (CGAs) is recognised as an inexpensive and effective method of separation. CGAs are micro-sized gas bubbles of 25 μm in average diameter and each is encapsulated in an aqueous shell of surfactant solution. High flotation efficiency can be achieved when colloidal gas aphrons are employed in a dilute suspension containing yeast cells. Under certain experimental conditions, the adsorption of yeast on the aphrons follows the Langmuir model. With changes in the pH and feed concentration, the mechanism of bubble attachment and detachment changes from a monolayer to a multilayer adsorption.",

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