塩化リチウムを海水から非常に効率的に分離する

Shinji Tsuchiya¹, Yoko Nakatani, Rizwangul Ibrahim

¹Institute of Industrial Science, University of Tokyo, Japan.

Journal of the American Chemical Society

|May 2, 2002

まとめ

新しいバイピリジンベースの複合剤は,液体膜を使用して,塩化リチウムを海水から効率的に分離します. この低エネルギーで環境に優しい方法は,実用的な用途のためにリチウムイオン濃度を大幅に高めます.

科学分野:

マテリアルサイエンス材料科学
化学工学は化学工学というものです.
環境科学環境科学

背景:

海水にはリチウムなどの貴重な元素が含まれていますが,その濃度が低く,他の金属塩化物の存在が分離の課題を提起しています.
海水からリチウムを抽出するための効率的で費用対効果の高い方法は,増加する需要を満たすのに不可欠です.

研究の目的:

塩化リチウムを海水から効率的に分離するための新しい複合剤を開発する.
リチウム抽出のための低エネルギー,低コスト,環境に優しい液体膜システムを実証する.

主な方法:

2つのビピリジン分子を含んだ複合剤を合成し,液体膜分離プロセスで利用した.
このシステムは,高濃度の他の金属塩化物を含む合成海水溶液からリチウム塩化物を分離する効率をテストした.

主要な成果:

液体膜システムは,塩化リチウムを効率的に分離し,2つの分離段階を経て,モラ比を0.005%から80%に増加させました.
反応剤は,リチウムイオンをアルカリとアルカリ土金属イオンから,リポフィルアニオンを必要とせずに効果的に分離した.

結論:

開発されたビピリジンベースの複合剤反応剤と液体膜システムは,海水からのリチウム塩化物の通常の分離に有望な解決策を提供します.
この方法は,リチウム資源の回収のための持続可能で経済的に実行可能なアプローチを提示します.

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