Removal of hazardous chemicals such as cyclohexane and naphtha components from water with air-stripping (MAS) technique using a polypropylene microporous hollow fiber module is reported. The mass transfer of these organics through the membrane from the water on the feed side to the air stream on the permeate side was evaluated under different experimental conditions in a batch system. Removal of cyclohexane as well as naphtha components by MAS process for the investigated experimental conditions appears to be promising. It was observed in separate experiments that the concentrations of cyclohexane and naphtha components in water were significantly reduced by the MAS process. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.