海水로부터 우라늄의 濃縮分離 = Concentration and Separation of Uranium from Sea Water

다국어 초록 (Multilingual Abstract)

The present demand for all civil and military purpose exceeds a Korean surplus of uranium resources. Natural sea water is known to contain uranium in the mean concentration of about 3.3 ㎍ U/㎏ in the from of UO_2(CO_3)_3^4- solution. Though sea water has its trace quantity of uranium, its recovery by extraction method and untilization as energy sources at present is very remarkable in many nations. In this paper it was surveyed systematically the present world status in the extraction studies of uranium from sea water.
Only a simple batch technique is described here, which permits an extraction of uranium from artificial and natural sea water. The basis of the technique is adsorption of the uranyl ion (UO_2(CO_3)_3^4- on solid adsorbent. The adsorbents were five kinds of activated TiO_2·H_2O series, titanium trihydroxy phosphate, zirconyl pyrophosphate, and zirconyl hydroxide. Of these adsorbents the most active material was TiO_2·H_O precipitated from the dissolved K_2TiF_6·H_2O in the 1 : 4 H_SO_4 aqueous solution by adding (NH_4)_2CO_3 solid until the pH of the filtered solution became 5.2. This extraction technique was successful to applying to the Korean beach sea water at Bizindo, Hansan-myun, Tongyung-gun, Kyungsangnam-do.

목차 (Table of Contents)

• Ⅰ. 序論
• Ⅱ. 海水우라늄採取에 대한 各國의 狀況
• Ⅲ. 實驗
• Ⅳ. 結果 및 考察