Abstract
A fundamental investigation was made on the adsorbent of uranium in sea-water for various titanic acid composite types. From the results of the experiment, the adsorption capacity of titanic acid-impregnated cordierite was increased to 1,900μg-U/g titanic acid when the concentration of uranium in sea-water was less than 0.1μg/l. A feasibility study was tried for 200 ton-U/year plant by honeycomb-shape adsorbent by using an ocean current, and it was proposed that many adsorbent forms with air tank were arranged as the teeth of a saw on the sea surface.