ABSTRACT
Experiments have shown that the liquid–solid system exhibits a significant, specific property, the so-called wetting and adsorption–desorption property. Many technical processes related to the characteristics of any solid + liquid system are very important in everyday life. The surface forces present at the point of liquid and solid contact are found to be related to the respective surface tensions. The worldwide concern with oil spills and their treatment is much dependent on surface chemistry principles. The detergent industry is a very large and important area where surface and colloid chemistry principles have been applied extensively. In many natural and industrial systems, one encounters liquid drops—small drops and micro drops—in contact with solid surfaces. Solvents are used to clean the soil from solid surfaces. The most convenient method is the ultrasonic treatment, with a subsequent solvent rinse of the surface.
