485. 海水中のウランの採取,(II)
海水ウラン採取のための吸着剤
1969 年 11 巻 2 号 p. 82-87
詳細
1969 年 11 巻 2 号 p. 82-87
About fifty insoluble compounds of titanium, aluminium, magnesium, calcium, silicon, zinc, chromium, lead and tin were examined in a search for suitable adsorbents of uranium in sea water. The only materials that exhibited an effective uptake were titanium hydroxide, lead sulfide and chromium hydroxide, the uptake capacities of which were 196, 134 and 68μg/g, respectively. While their uptake capacity was small, manganese dioxide, zinc hydroxide and lead hydroxide also adsorbed uranium in the pH range of sea water. Ferric hydroxide, ferrous sulfide, ferric phosphate, tin sulfide, titanium hydroxide and manganese oxide were found fo be good adsorbents in acidified sea wafer, though acidification of sea wafer would not be practical in indusfrial scale operations. Tannic acid salts of magnesium, calcium and titanium adsorbed uranium in sea water, but had the drawback of relatively large solubility.
