Surfactants and Colloids in the Environment

Opening address by the president of the kolloid-gesellschaft Prof. M. J. Schwuger.- Wolfgang Ostwald Prize 1993 awarded to Wolfgang Helfrich.- Steinkopff-prize 1993 recipient DuSan Vu?eli?.- Pathways of vesiculation.- Physico-chemical aspects of zeolite-A synthesis and application for environmental safe detergents.- Predicting synergism in binary mixtures of surfactants.- Environmental specimen bank of the federal republic of Germany - Significance of surfactants.- Bentonites: adsorbents of toxic substances.- Interaction between ionic surfactants and soil colloids: adsorption, wetting and structural properties.- Adsorption of ionic surfactants on clay minerals and new insights in hydrophobic interactions.- The clay/water interface and its role in the environment.- Thermochemistry and adsorption equilibria at hematite - water interface.- The kinetic spectrum method applied to the ion exchange of Cd(II) at Mg(II)-montmorillonite.- An approximative method for the transformation of kinetic sorption data from batch-experiments to transport processes in model soil columns.- Physicochemical aspects of in situ surfactant washing of oil contaminated soils.- Changes of the density of charge on mineral soil components by adsorption of some metabolites of hydrocarbons.- X-ray microscopy studies of aqueous colloid systems.- Direct imaging of aggregates in aqueous clay-suspensions by x-ray microscopy.- Competitive and displacement adsorption of cetylpyridinium chloride and p-nitrophenol on charged surfaces: A surface-enhanced Raman microprobe Scattering (SERS) study.- Chemical and physical aspects of coagulation.- Control and optimization of flocculation processes in the laboratory and in plant.- The role of surfactants and polymers in the filler flotation from waste paper.-Application of magnetite sols in environmental technology.