CLEANUP OF OILY WASTE-WATER BY FROTH FLOTATION - EFFECT OF MICROEMULSION FORMATION

This study showed that the efficiency of removal of sigma-dichlorobenz ene from water by batch froth flotation increases as changes in salini ty cause the system to vary from a Winsor Type I microemulsion to a Wi nsor Type III microemulsion. The cationic surfactant studied is more e ffective than either the monosulfate or the disulfonate anionic surfac tants studied. The oil flotation efficiency increases as the initial s urfactant concentration increases, as the salinity increases (causing a Winsor Type I to III transition for these systems), and as the oil/w ater ratio decreases.