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All Journal Indonesian Mining Journal
Hairunnisa
Testing Center for Mineral and Coal, Ministry of Energy and Mineral Resources
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology

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STUDI PENDAHULUAN: EKSTRAKSI LITIUM DARI FLUIDA PANAS BUMI DIENG MELALUI EKSTRAKSI PELARUT Agus Wahyudi; Andina Septiarani; Hairunnisa; Isyatun Rodliyah
Indonesian Mining Journal Vol 26 No 1 (2023): Indonesian Mining Journal, April 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol26.No1.2023.1477

Abstract

This preliminary study aims to obtain the lithium compounds from a geothermal brine through a solvent extraction. The brine samples were collected from PT Geodipa Energi Geothermal Power Plant in Dieng, Central Java, Indonesia. The ICP analysis was conducted to measure brine chemical composition. Brine’s lithium content was 62.73 ppm with the dominant impurities silica (Si), calcium (Ca), potassium (K), sodium (Na), and boron (B). Silica removal was conducted by centrifugation technic with the addition of flocculants, while calcium removal was achieved by adding sodium carbonate. The CYANEX® 936P was used for the extraction process and was diluted in kerosene (1:1 O/A ratio). The extraction pH was adjusted by adding 10% H2SO4 solution (acid condition) and 10% NH4OH (alkaline condition). The optimum condition for lithium extraction was observed at pH = 11, with the highest lithium recovery of 90%. The eluate from the stripping process was then precipitated by adding Na2CO3 to produce lithium carbonate powder.
Co-Authors AGUS WAHYUDI Andina Septiarani Isyatun Rodliyah