The Ion Exchange and Solvent Extraction series treats ion exchange and solvent extraction both as discrete topics and as a unified, multidisciplinary study - presenting new insights for researchers in many chemical and related fields., Volume 12 contains coverage of: the nature of metal-ion interaction with oppositely charged sites of ion exchangers, high-pressure ion exchange separation of rare earth elements, the commercial recovery of valuable minerals from seawater and brines by ion exchange and sorption, the kinetics of ion exchange in heterogenous systems, the ion-exchange equilibria of amino acids, and more., The work is intended for analytical, co-ordination, process, separation, surface, organic, inorganic, physical and environmental chemists, geochemists, electrochemists, radiochemists, biochemists, biophysicists, hydrometallurgists, membrane researchers and chemical engineers.