Date of Award
Master of Science in Civil Engineering - (M.S.)
Civil and Environmental Engineering
Mohamed E. Labib
William R. Spillers
Peter J. Zanzucchi
In this thesis we studied the physics and chemistry of the adhesion of various classes of organic compounds to glass and stainless steel surfaces, by using diagnostic aqueous cleaning solutions and other techniques. We defined the thermodynamic requirements for aqueous cleaning based on extensive experimental and theoretical work. Novel cleaning diagrams are introduced, based on electrostatic interactions between organic compounds and solid surfaces, to facilitate the design of aqueous cleaning systems. We studied the mass transfer parameters for selected situations. The electrochemical Pourbaix-diagrams were used to explain the effect of hydrogen peroxide added to aqueous solutions and to avoid corrosion of solid surfaces during cleaning. On the basis of this work, we defined the necessary requirements for new non-stick materials to be developed. The use of such new materials should minimize the adhesion of organic materials to vessel surfaces.
de Ruijter, Michel J., "Fundamentals of adhesion of organic compounds and aqueous cleaning of glass and metal surfaces : applications in the pharmaceutical and chemical industries" (1995). Theses. 1594.