Abstract
Japan depends most of her energy resources on foreign countries. Therefore, nuclear power generation is considered to be very important, but known domestic uranium resources are very rare. Hence, extraction of uranium from seawater has become of interest. Many investigations on this project have been carried out including the research programme by the Metal Mining Agency of Japan. The selections of the chemical processes, development of adsorbents mainly on hydrous titanium oxide, the elution process, the recovery of eluate by steam stripping or electrodialysis, secondary concentrations, the conceptual designs of the commercial plants, and some tentative cost estimations will be described.
