Surveyed in this book are the kinetics of non-linear mass transfer and its effects on hydrodynamic stability in systems with intensive interphase mass transfer, in electrochemical systems with high current density and in chemically reacting systems.
In Part 1 the non-linear mass transfer as a result of an intensive interphase mass transfer in the gas (liquid)-solid surface, gas-liquid and liquid-liquid systems is considered in the duffusion boundary layer approximation as well as in flat channel taking the longitudinal diffusion into account. The influence of the direction of the intensive interphase mass transfer on heat transfer and multi-component mass transfer is illustrated.
Part 2 discusses non-linear mass transfer in electrochemical systems with high current density using the examples of the anode dissolving of metals in the electrolyte flow and the electro-separation of metals out of concentrated solutions. The theory of the measured electrochemical treatment of metals and alloys, which is a method of wide practical use, has been elaborated on this basis.
In Part 3 the non-linear mass transfer in chemically reacting systems is considered in the cases of: non-linearity of the equations of the chemical reaction's kinetics and intensive interphase mass transfer or thermo-capillary effect due to chemical reactions. On this basis, the mechanisms and the macro-kinetics of the chemical transformations in the gas-liquid systems are discussed.
Part 4 is dedicated to the chemical reaction kinetics in stationary two phase systems at an arbitrary contact time between phases.
In Part 5 the effects of concentration gradients are considered in the approximations of the linear theory of the hydrodynamic stability of almost parallel flows.
In systems with intensive interphase mass transfer, the Marangoni effect could also be observed, beside the effect of non-linear mass transfer. A
For scientists conducting research in the areas of chemical engineering, biochemical engineering, fluid mechanics, thermophysics and heat and mass transfer.
Preface. Introduction. Linear Mass Transfer Theory. Model theories. Boundary layer theory. Immobile phase boundary. Moving phase boundary. Counter-current flow. References.
PART 1: Systems with Intensive Interphase Mass Transfer. Specifics of the Hydrodynamic Conditions of the Intensive Interphase Mass Transfer. Influence of the intensive interphase mass transfer on hydrodynamics. Boundary conditions of the non-linear mass transfer problem. Gas (Liquid)-Solid System. Non-linear mass transfer in the boundary layer. Heat transfer in the conditions of non-linear mass transfer. Multicomponent mass trasfer. Non-linear mass transfer in the entrance region of a channel. Gas-Liquid and Liquid-Liquid Systems. Non-linear mass transfer in the gas and in the liquid boundary layer. Multicomponent interphase mass transfer in the case of an intensive mass transfer in the gas. Non-linear interphase mass transfer between two liquids. Gas-Falling Liquid Film-Solid Surface System. Non-linear interphase mass transfer between the gas and the falling liquid film. Non-linear effects in the case of a multicomponent interphase mass transfer between the gas and the liquid film. Effects of Concentration and Temperature on the Non-Linear Mass Transfer. Concentration effects. Influence of the high concentration on the mass transfer rate. Non-linear mass transfer and Marangoni effect. References.
PART 2: Electrochemical Systems with High Intensity Electric Currents. Fundamentals of the Kinetic Theory of Transport of Mass and Charge in Electric Systems. Method of the self-consistent field. Transport of neutral molecules in the self-consistent field of the double electric layer. Method of the local thermodynamic equilibrium. Anodic Metal Dissolution in an Electrolyte Flow. Dissolution of surfaces equi-accessible with respect to the ioni
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- © Elsevier Science 2000
- 16th August 2000
- Elsevier Science
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Institute of Chemical Engineering, Bulgarian Academy of Sciences, Acad. G. Bontchev Str. Bl. 103, 1113 Sofia, Bulgaria
Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogloovka, 142432 Moscow, Russia