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    • 6. 发明公开
    • 해수 내 리튬을 회수하는 방법
    • 在海水中回收锂的方法
    • KR1020130078174A
    • 2013-07-10
    • KR1020110146969
    • 2011-12-30
    • 재단법인 포항산업과학연구원
    • 박성국박광석이상길위진엽김기홍
    • C22B26/12C02F1/28
    • PURPOSE: A method for collecting lithium in sea water is provided to separate an element except lithium effectively by using a chemical refinement process and a separation method using a nanofiltration membrane at a same time. CONSTITUTION: A method for collecting lithium in sea water comprises the following steps: lithium in sea water is absorbed by using an adsorbent consisting of a manganese oxide; a lithium desorption solution is obtained by a desorption of lithium absorbed in the adsorbent by using an acidic solution; a divalent cation existing in the lithium desorption solution is removed through a chemical refinement process; and the lithium desorption solution in which the divalent cation is removed is separated to a permeated water and an enriched water by circulating a module comprised of a nanofiltration membrane of a spiral type. [Reference numerals] (AA) Seawater; (BB) Absorb lithium in the seawater; (CC) Desorption; (DD) Desorption solution; (EE) Enrichment; (FF) Collect hydrochloric acid; (GG) Collect Mn; (HH) Separate divalent ion; (II) Collected Mn (reuse to manufacture an absorbent)
    • 目的:提供一种在海水中收集锂的方法,通过使用化学精制方法和使用纳滤膜的分离方法同时有效地分离除锂以外的元素。 构成:在海水中收集锂的方法包括以下步骤:使用由氧化锰组成的吸附剂吸收海水中的锂; 通过使用酸性溶液吸附在吸附剂中的锂的解吸获得锂解吸溶液; 存在于锂解吸溶液中的二价阳离子通过化学精制过程去除; 并且通过循环由螺旋型纳米过滤膜组成的模块,将除去二价阳离子的锂解吸溶液分离成透过水和富水。 (附图标记)(AA)海水; (BB)吸收海水中的锂; (CC)解吸; (DD)解吸溶液; (EE)浓缩; (FF)收集盐酸; (GG)收集Mn; (HH)分离的二价离子; (II)收集的锰(重复使用以制造吸收剂)