Journal
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
Volume 24, Issue 1, Pages 1-14Publisher
BRAZILIAN SOC CHEMICAL ENG
DOI: 10.1590/S0104-66322007000100001
Keywords
foam fractionation; proteins; surfactant; bubble column
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A model is derived for the change with time of the concentration of a surface-active component in the liquid pool of a semi-batch foam fractionation process. The transport of surface-active material to the gas-liquid interface was assumed to be limited by the mass transfer rates, and the concentration of the adsorbed material at the interface was assumed to be in equilibrium with the concentration of liquid adjacent to the bubble gas surface. This model was compared to experimental data obtained for semi-batch foam fractionation of aqueous solutions of bovine serum albumin and cetyltrirnetylammonium bromide.
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