Abstract
The density of uranium in the seawater is only 3.3 mg/m3, but its total amount 4.5 billion tons is 45, 000 times of annual demand of nuclear fuel in the world. The target of this study is the cost-down of the collection of theuranium from the sea to three times of the market price and cheaper than the recycle fuel by nuclear reprocessing. In this study, the high performance adsorbent deformed to the race is proposed with its mooring system, and thefeasibility of the cost down is shown in the Kuroshio influenced basin offshore the west coast of the Okinawa Island, based on the field test on the adsorption ratio of uranium and the quantity and kind of the adhered creature and the water channel test on the drag force on the adsorbent due to waves and currents.
