Modelling of heterogeneous processes, such as electrochemical reactions, extraction, or ion-exchange, usually requires solving the transport problem associated to the process. Since the processes at the phase boundary are described by scalar quantities and transport quantities are vectors or tensors, coupling them can take place only via conservation of mass, charge, or momentum. In this book, the transport of ionic species is addressed in a versatile manner, emphasizing the mutual coupling of fluxes in particular. Treatment is based on the formalism of irreversible thermodynamics, i.e. on linear (ionic) phenomenological equations, from which the most frequently used Nernst-Planck equation is derived. Limitations and assumptions made are thoroughly discussed. The Nernst-Planck equation is applied to selected problems at the electrodes and in membranes. Mathematical derivations are presented in detail so that the reader can learn the methodology of solving transport problems. Each chapter contains a large number of exercises, some of them more demanding than others.
Kyoesti KONTTURI, Dr. Current position 1.1.2002 - Professor of Physical Chemistry and Electrochemistry at Aalto University 1995 - Docent in Pharmaceutical Physical Chemistry at University of Kuopio Education and training Helsinki University of Technology 1974 M.Sc. (Chem.Eng./Phys.Chem.) 1981 Lic.Techn. (Chemistry) 1983 Dr.Techn. (Chemistry) Lasse MURTOMaKI, Dr. Current position 1.8.2004- Teaching Researcher, Aalto University, Lab. of Physical Chemistry and Electrochemistry Education and training Helsinki University of Technology (TKK) 1987 M.Sc. (Chem.Eng.) 1990 Lic. Sci. (Technology, Dept. of Process and Material Science) 1992 Dr.Sci. (Technology, Dept. of Process and Material Science) Jose A. MANZANARES, Dr. Current position 1.7.2002 - Professor of Applied Physics at University of Valencia 1.4.2006 - Docent of Statistical Thermodynamics at Helsinki University of Technology Education and training University of Valencia, Spain 1988 Licenciate Physics 1990 Ph.D. (Physics, Thermodynamics)
1. Thermodynamics of irreversible processes ; 2. Transport equations ; 3. Transport at electrodes ; 4. Transport in membranes ; 5. Transport through liquid membranes