The surface element integration technique is used to calculate the DLVO interactions between spherical colloidal particles and the simulated (reconstructed) membrane surfaces. We present a technique of reconstructing the mathematical topology of polymeric membrane surfaces using statistical parameters derived from atomic force microscopy roughness analyses. To better understand the consequences of surface roughness on colloid deposition and fouling, it is imperative that models for predicting the Derjaguin-Landau-Verwey-Overbeek (DLVO) interaction energy between colloidal particles and rough membrane surfaces be developed. In Final Form: FebruRecent experimental investigations suggest that interaction of colloidal particles with polymeric membrane surfaces is influenced by membrane surface morphology (roughness). Hoek,*,† Subir Bhattacharjee,‡ and Menachem Elimelech§ Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, Department of Mechanical Engineering, University of Alberta, Edmonton, AB, T6G 2G8, Canada, and Department of Chemical Engineering, Environmental Engineering Program, Yale University, New Haven, Connecticut 06520-8286 Received December 31, 2002.
Effect of Membrane Surface Roughness on Colloid-Membrane DLVO Interactions Eric M.