ドウソナイトによるリチウムイオンの捕捉機構
1988 年 104 巻 1201 号 p. 169-172
詳細
1988 年 104 巻 1201 号 p. 169-172
Li+ coexisting with other alkaline metal ions in a weakly basic aqueous solution can be accumulated selectively by using dawsonite, NaAlCO3 (OH) 2, as a collector. The accumulation mechanism of Li+ by this mineral was considered by examining the amounts of Li accumulated and the change of constituent mineral composition of solid phases under various experimental conditions. There are possible two different mechanisms; one is the cation exchange reaction of the amorphous hydrous aluminum oxide produced by the hydrolysis of dawsonite, and the other is crystallization of lithium aluminate. The selective accumulation of Li+ is inferred to be mainly caused by the latter mechanism.
