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Separation of Magnesium and Lithium from Brine Water and Bittern Using Sodium Silicate Precipitation Agent

Author

Listed:
  • Eko Sulistiyono

    (Department of Metallurgical and Materials Engineering, Universitas Indonesia, Depok 16424, Indonesia)

  • Sri Harjanto

    (Department of Metallurgical and Materials Engineering, Universitas Indonesia, Depok 16424, Indonesia)

  • Latifa Hanum Lalasari

    (Research Center of Metallurgy, National Research and Innovation Agency, South Tangerang 15314, Indonesia)

Abstract

Potential natural resources of lithium in Indonesia from brine water and bittern generally have low lithium and high magnesium levels, which need to be separated before further extraction. This research investigates the separation process of magnesium from brine water and bittern using a sodium silicate solution. The experimental results showed that the magnesium precipitation efficiency using sodium silicate was better in brine water than in bittern. A separation selectivity ratio of magnesium to lithium (Mg/Li) below 1 was obtained in brine water of 0.59 and bittern of 0.11 with the addition of a 1.25 mole fraction of sodium silicate solution to magnesium ions. After the precipitation at optimum addition of sodium silicate and water leaching process using distilled water, lithium’s recovery in the brine water and bittern filtrate was 84% and 35%, respectively. In brine water, water leaching increased lithium and magnesium ions in the filtrate. However, in bittern, the water leaching increased lithium recovery without dissolving magnesium ions into the filtrate. The precipitation products from the bittern were identified as complex lithium compounds in the forms of Li 2 MgO 4 SiLi 2 (MgSiO 4 ) and LiMg 4 Na 3 O 30 Si 12 phases, while the precipitation products in brine water mostly had a phase of CaO·MgO·Si 2 O 5 (Diopside) and LiCl.

Suggested Citation

  • Eko Sulistiyono & Sri Harjanto & Latifa Hanum Lalasari, 2022. "Separation of Magnesium and Lithium from Brine Water and Bittern Using Sodium Silicate Precipitation Agent," Resources, MDPI, vol. 11(10), pages 1-12, September.
    • Handle: RePEc:gam:jresou:v:11:y:2022:i:10:p:89-:d:930341
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    References listed on IDEAS

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    1. Laurence Kavanagh & Jerome Keohane & Guiomar Garcia Cabellos & Andrew Lloyd & John Cleary, 2018. "Global Lithium Sources—Industrial Use and Future in the Electric Vehicle Industry: A Review," Resources, MDPI, vol. 7(3), pages 1-29, September.
    2. Damien Giurco & Steve Mohr & Gavin Mudd & Leah Mason & Timothy Prior, 2012. "Resource Criticality and Commodity Production Projections," Resources, MDPI, vol. 1(1), pages 1-11, December.
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    Cited by:

    1. Rabia Khatoon & Ratchaprapa Raksasat & Yeek Chia Ho & Jun Wei Lim & Khairulazhar Jumbri & Chii-Dong Ho & Yi Jing Chan & Eman Alaaeldin Abdelfattah & Kuan Shiong Khoo, 2023. "Reviewing Advanced Treatment of Hydrocarbon-Contaminated Oilfield-Produced Water with Recovery of Lithium," Sustainability, MDPI, vol. 15(22), pages 1-29, November.

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