ACADEMIC RESEARCH IN MODERN SCIENCE
International scientific-online conference
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THE TECHNOLOGY OF EXTRACTING LITHIUM FROM GEOTERMAL
BRINE.
Gulkhayo Umidjonova
1
Murodjon Samadiy
1,2
1
Chemical Technology Department, Karshi
State Technical University, Karshi, Uzbekistan,
2
College of Marine and Environmental Science,
Tianjin University of Science and Technology, Tianjin, PRC
1,2
Corresponding Author : samadiy@inbox.ru
https://doi.org/10.5281/zenodo.15095893
Abstract
Geothermal brines are considered a promising source of lithium. This
article analyzes lithium extraction technologies, particularly ion exchange resins,
membrane filtration, and solvent extraction methods. Additionally, possibilities
for improving efficiency and recycling wastewater are examined.
Keywords:
lithium extraction, geothermal brines, ion exchange, membrane
filtration, solvent extraction
In recent years, the importance of lithium in electrical engineering, the
battery industry, and other high-tech sectors has been increasing. Lithium
reserves from traditional mines are limited, making the search for alternative
sources a pressing issue. Geothermal brines are considered a promising source
for industrial-scale lithium extraction, as they contain lithium in relatively high
concentrations. This article discusses lithium extraction technologies from
geothermal brines, along with their advantages and disadvantages.
The study examines existing scientific articles and industrial practices on
lithium extraction from geothermal brines. The following key technological
approaches were selected for analysis:
- Ion exchange – lithium extraction using specialized resins;
- Membrane filtration – separation of ions in water through physical
barriers;
- Solvent extraction – lithium separation using organic solvents.
The efficiency, energy consumption, and environmental impact of each
technology were analyzed.
Ion exchange resins bind lithium ions present in water, allowing for their
subsequent extraction using specific reagents. While this method offers high
selectivity, the lifespan of ion exchange materials is limited.
Reverse osmosis and nanofiltration technologies are used for lithium
extraction. This method is environmentally friendly and allows for water
ACADEMIC RESEARCH IN MODERN SCIENCE
International scientific-online conference
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recycling. However, the rapid fouling of membranes and the high energy
demand of the technology are among its drawbacks.
This method involves extracting lithium using organic solvents. While
solvent extraction enables the production of highly pure lithium compounds, the
use of chemical substances may pose environmental challenges.
Lithium extraction from geothermal brines will remain a key technological
direction in the future. The research findings indicate that ion exchange and
membrane filtration technologies have advantages in terms of environmental
safety and efficiency. Further studies are needed to optimize these methods and
improve wastewater recycling processes.
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