Hexachlorobutadiene and 2,4,6-trichlorophenol were removed from aqueous solutions into paraffin oil by solvent sublation. Over 99% of hexachlorobutadiene was removed from a solution containing 100 ppb hexachlorobutadiene initially in 10 min. The rate of removal of hexachlorobutadiene by air stripping is somewhat slower than that by solvent sublation. The effects of added salt and ethanol on solvent sublation and air stripping of hexachlorobutadiene were studied. About 64% of 2,4,6-trichlorophenol were removed by solvent sublation from a solution containing 50 ppm 2,4,6-trichlorophenol initially at pH 1.84 for a 1-h run. The rate of removal of 2,4,6-trichlorophenol can be improved by adding the cationic surfactant, hexadecyltrimethylammonium bromide (HTA). As high as 95% of 2,4,6-trichlorophenol was removed in 1 h if 10 ppm HTA was added to the solution before solvent sublation runs. © 1990, Taylor & Francis Group, LLC. All rights reserved.