1 was introduced to adsorption when 1 spent two years (19691 1971) J. M. Smith at the Universityof California, Davis, with Professor studying application of chromatographic methods to determine rate processes in adsorption columns. After returning to the lnstitute of Industrial Science, University of Tokyo, 1 joined Professor Kunitaro Kawazoe's adsorption research group where pioneering work in adsorption engineering had been conducted, and started research on development of adsorption technology for water pollution control..