Record Display for the EPA National Library Catalog


Main Title Organic Gradient in a Concentration Column.
Author Kow, Bong T. ;
CORP Author Rutgers - The State Univ., New Brunswick, N. J. Water Resources Research Inst.
Year Published 1970
Report Number OWRR-A-015-N. J.; A-015-N. J.(1),; 01340
Stock Number PB-195 777
Additional Subjects ( Bubbling ; Separation) ; ( Concentrating ; Bubbling) ; Foaming ; Columns(Process engineering) ; Surface tension ; Chemical engineering ; Solutions ; Industrial wastes ; Water pollution control ; Bubble separation ; Gas surface interactions
Library Call Number Additional Info Location Last
NTIS  PB-195 777 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 49p
A continuous bubble fractionation system consisting of vertical tube provided with a source of air bubbles, means of continuous liquid feed, overflow, and bottom effluent has been studied. The study primarily involves an examination of the effects of variables, such as gas rate, liquid rates, solute concentration and column size, on the effectiveness of the system for separating an organic solute from a dilute aqueous solution. The effects of gas and liquid rate on the performance have generally followed the results expected from an equilibrium adsorption of a surfactant on the gas-liquid interface described by Gibbs' equation and material balances. An increase in gas rate increased the effectiveness of the system by providing more adsorption surface. The adverse transfer of the solute by the eddy diffusion, caused by rising bubbles, was found to be the factor limiting the effectiveness of the system. Part II of the report considers effects of variations in the height and diameter of the column upon solute concentration profile and effectiveness of the column. Column heights above 30 cm were found to have little effect upon performance, and increases in column diameter greatly reduced effectiveness. (WRSIC abstract)