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A Study on Lithium Recovery from Seawater: Separation of Lithium from Hydrochloric Acid Solutions Containing CaCl2, MgCl2, MnCl2, NaCl, KCl, and LiCl

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Zero-Carbon Energy Kyoto 2012

Part of the book series: Green Energy and Technology ((GREEN))

Abstract

The adsorption method using manganese oxide is used for lithium recovery from seawater and the product solutions (acidic condition) after adsorption contains other elements such as Ca, Mg, Mn, Na, and K as well as lithium. Thus, Li recovery from hydrochloric acid solutions containing CaCl2, MgCl2, MnCl2, NaCl, KCl, and LiCl by hydrometallurgical process was investigated. A two-stage precipitation was adopted in this process using NaOH to remove Ca, Mg, and Mn and using Na2CO3 to separate Li. In the result, Ca, Mg, and Mn could be mostly removed from target solutions by precipitation as Ca(OH)2, Mg(OH)2, and Mn(OH)2 at a range of pH from 11.5 to 12.5 in the first stage. The residual Li that was precipitated as Li2CO3 by Na2CO3 in the second stage could be concentrated by evaporation at 100°C to make high lithium recovery. The final precipitation of lithium after evaporation produced crystalline lithium carbonates with high purity (99.4%).

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Acknowledgement

This work was partly supported by an “Energy Science in the Age of Global Warming” of Global Center of Excellence (G-COE) program (J-051) of the Ministry of Education, Culture, Sports, Science and Technology of Japan.

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Authors and Affiliations

  1. Department of Energy Science and Technology, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, 606-8501, Japan

    Namil Um & Tetsuji Hirato

Authors
  1. Namil Um
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  2. Tetsuji Hirato
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Correspondence to Tetsuji Hirato .

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Editors and Affiliations

  1. Graduate School of Energy Science, Kyoto University Steering Committee of GCOE Unit for Energy Science Education, Yoshida-honmachi, Sakyo-ku, Kyoto, 606-8501, Japan

    Takeshi Yao (Professor) (Professor)

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Um, N., Hirato, T. (2013). A Study on Lithium Recovery from Seawater: Separation of Lithium from Hydrochloric Acid Solutions Containing CaCl2, MgCl2, MnCl2, NaCl, KCl, and LiCl. In: Yao, T. (eds) Zero-Carbon Energy Kyoto 2012. Green Energy and Technology. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54264-3_16

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  • DOI: https://doi.org/10.1007/978-4-431-54264-3_16

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  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-54263-6

  • Online ISBN: 978-4-431-54264-3

  • eBook Packages: EnergyEnergy (R0)

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