ANOTACE
The aqueous solutions of simple alcohols, as methanol, ethanol and propanol, are used in many industrial, biological, pharmaceutical and daily processes and we often do not realize their atypical properties. Their unusual behaviour is caused by the solution microstructure. It was found that simple alcohols in aqueous solutions are micro heterogeneous since they tend to develop distinct local microstructures consisting both of alcohol and water molecules. These structures can have an effect on the interfacial properties of liquid mixtures and may cause unpredictable anomalies in the behaviour of systems where the surface phenomena play an important role. The typical examples are the motion of dispersed fluid particles (bubbles, drops) through the carrying bulk liquid, hydrodynamic interactions between such particles (coalescence and breakup), behaviour of fluid particles at rigid surfaces (adhesion). Such situations commonly occur in many important technological processes and equipment (fermenters, adsorption columns, waste water treatment, flotation, etc.), which presents strong motivation for the research. The project is aimed at the investigation of hydrodynamic behaviour of multiphase systems with solutions of alcohols and/or surfactants as liquid phase. The aqueous solutions of short-chain alcohols exhibit certain atypical behaviour and features. The hydrodynamic interactions in small bubble clusters will be studied by visualization, namely the bubble configuration, velocity and interaction. Starting with air-water system, the effect of liquid viscosity and presence of simple alcohols will be investigates subsequently. This will be the input for the model formulation. The work will focus on the test of level-se…