Ionic Transport Processes
in Electrochemistry and Membrane Science

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 of them can take place only via conservation of mass, charge or momentum. In this book, 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.

1. Thermodynamics of Irreversible Processes. 2. Transport Equations. 3. Transport at Electrodes. 4. Transport in Membranes. 5. Transport Through Liquid Membranes.

Kyösti KONTTURI, Dr. Current position 1.1.2002 - Professor of Physical Chemistry and Electrochemistry at Helsinki University of Technology 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 MURTOMäKI, Dr. Current position 1.8.2004- Teaching Researcher, Helsinki University of Technology, 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) José 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)