SOLUBILITY AND ADSORPTION BEHAVIORS OF CHLOROPHENOLS IN THE PRESENCE OF SURFACTANT

The solubility of chlorophenols as affected by surfactant was investig ated. Three kinds of surfactant, sodium dodecyl sulfate, Triton X-100, and Brij 35, were utilized. The solubilization of chlorophenols by su rfactant follows the order of 2,4,6-trichlorophenol > 2,6-dichlorophen ol > 2,6-dichlorophenol > 2-chlorophenol; and the critical micelle con centration is an important index. The adsorption reactions of 2,4-dich lorophenol and 2,4,6- trichlorophenol onto hydrous montmorillonite in the presence of surfactant were examined. The presence of surfactant d ecreased the adsorption of chlorophenols significantly. The roles of h ydrophobicity of chlorophenols in solubilization and adsorption behavi ors are discussed. (C) 1997 IAWQ. Published by Elsevier Science Ltd.