Surfactant Recovery in Adsorbing Colloid Flotation

Electrical Aspects of Adsorbing Colloid Flotation. XVII. Quasi-Chemical Method for Adsorption of Mixed Surfactants

“…This is discussed in earlier papers(21)(22)(23)(24)(25)(26). The results of increasing the temperature are similar to those of decreasing the wxy insofar as the shapes of the isotherms are concerned, since Eqs.…”

“…According to the model, flotation of the solid becomes possible when a condensed monoiayer of surfactant forms on the solid surface with polar or ionic heads to the solid and hydrocarbon tails to the aqueous phase; this makes the surface hydrophobic and permits the attachment of air bubbles. Currin et al extended the quasi-chemical method to investigate the displacement of the adsorbed amphipathic ions by competing foreign ions (22). Clarke At higher concentrations of surfactant a second, reversed monolayer of surfactant can be adsorbed on top of the first, making the solid surface hydrophilic and suppressing flotation.…”

Removal of Refractory Organics from Water by Aeration. I. Methyl Chloroform

“…Macroreticular resins also show promise for removal of refractor organics (6)(7)(8). We here discuss two closely related aeration techniques into which we were led by previous work on adsorptive bubble separation methods for the removal of inorganic compounds (9,10). Both of these involve the bubbling of air through a countercurrent flow column.…”