Recent Advances in the Lithium Recovery from Water Resources: From Passive to Electrochemical Methods

Area of Science:

• Materials Science
• Environmental Science
• Chemical Engineering

Background:

• Increasing demand for lithium batteries depletes traditional mining resources.
• Water bodies represent a largely untapped reservoir for lithium extraction.
• Current lithium extraction technologies face limitations in efficiency and scalability.

Purpose of the Study:

• To provide a comprehensive overview of lithium recovery techniques from water resources.
• To rationally compare passive and electrically enhanced methods for lithium removal.
• To identify key performance metrics for evaluating lithium extraction strategies.

Main Methods:

• Review of existing literature on lithium recovery from aqueous sources.
• Analysis of evaporation, ion sieves, supramolecular systems, membrane, and electrochemical techniques.
• Comparison of techniques based on practical figures of merit.

Main Results:

• Evaporation is time-consuming with large environmental footprints.
• Ion sieves and supramolecular systems offer tailored solutions, integrable into advanced techniques.
• Significant variability in data due to the absence of common experimental protocols.

Conclusions:

• Standardized methodologies and agreed-upon performance metrics are essential for comparing lithium recovery techniques.
• Further research is needed to optimize and scale up promising methods for efficient lithium extraction from water.
• Developing standardized protocols will accelerate the development of sustainable lithium sourcing.