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Continuous electrical pumping membrane process for seawater lithium mining

机译：海水锂电厂连续电气泵浦膜工艺

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摘要

Seawater contains significantly larger quantities of lithium than is found on land, thereby providing an almost unlimited resource of lithium for meeting the rapid growth in demand for lithium batteries. However, lithium extraction from seawater is exceptionally challenging because of its low concentration (similar to 0.1-0.2 ppm) and an abundance of interfering ions. Herein, we creatively employed a solid-state electrolyte membrane, and design a continuous electrically-driven membrane process, which successfully enriches lithium from seawater samples of the Red Sea by 43 000 times (i.e., from 0.21 to 9013.43 ppm) with a nominal Li/Mg selectivity 45 million. Lithium phosphate with a purity of 99.94% was precipitated directly from the enriched solution, thereby meeting the purity requirements for application in the lithium battery industry. Furthermore, a preliminary economic analysis shows that the process can be made profitable when coupled with the Chlor-alkali industry.
机译：海水含有比土地上的锂少量大量锂，从而提供了几乎无限的锂资源，用于满足锂电池需求的快速增长。 然而，由于其低浓度（类似于0.1-0.2ppm）和干扰离子的低浓度（类似于0.1-0.2ppm），锂萃取来自海水的锂萃取是特殊的挑战性。 在此，我们创造性地使用固态电解质膜，并设计连续的电动膜方法，该方法成功地从红海的海水样品中富集了43 000次（即，从0.21至9013.43ppm），具有标称锂 / mg选择性＆ 4500万。 纯度为99.94％的磷酸锂直接从富集的溶液中沉淀，从而满足锂电池工业中应用的纯度要求。 此外，初步经济分析表明，与氯碱工业相结合时，该过程可以有利可图。

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  • 来源
    《Energy & environmental science》 |2021年第5期|3152-3159|共8页
  • 作者

    Li Zhen; Li Chunyang; Liu Xiaowei; Cao Li; Li Peipei; Wei Ruicong; Li Xiang; Guo Dong; Huang Kuo-Wei; Lai Zhiping;

  • 作者单位

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

    King Abdullah Univ Sci & Technol KAUST Div Phys Sci & Engn Thuwal 239556900 Saudi Arabia;

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