Modified Clays as Sorbents for Aromatic Hydrocarbons in Aqueous and Mixed-SolventSystems-2

摘要

The second year of a two-year research project was used to complete a series ofexperiments on the sorptive properties of organoclays preparedfrom Wyoming montmorillonite by replacing the natural exchange ions of the clay by the quaternary ammonium ions TMA (tetramethylammonium), TMPA(trimethylphenylammonium), HDTMA (hexadecyltrime-thylammonium), and BDTDA (benzyldimethyltet radecylammonium). Experiments on the kinetics ofsorption of naphthalene and diuron by two of the organoclays show that equilibrium is attained quickly, in most cases within one or two hours.