Researchers in Australia and China have developed an innovative technology enabling direct lithium extraction from difficult-to-process sources like saltwater, which they say represents a substantial portion of the world’s lithium potential.
Until now, up to 75% of the world’s lithium-rich saltwater sources have remained untapped because of technical limitations, but given predictions that global lithium supply could fall short of demand as early as 2025, the researchers believe they have a game-changing solution. Their technology is a type of nanofiltration system that uses ethylenediaminetetraacetic acid, or EDTA, as a chelating agent to selectively separate lithium from other minerals, especially magnesium, which is often present in brines and difficult to remove.
“With some predicting global lithium supply could fall short of demand as early as 2025, the innovative technology sets a new standard in lithium processing,” writes SciTechDaily:
The work, co-led by Dr Zhikao Li, from the Monash Suzhou Research Institute and the Department of Chemical and Biological Engineering, and Professor Xiwang Zhang from the University of Queensland, promises to meet the surging demand for lithium and paves the way for more sustainable and efficient extraction practices… “Our technology achieves 90 percent lithium recovery, nearly double the performance of traditional methods, while dramatically reducing the time required for extraction from years to mere weeks,” Dr. Li said.
The technology also turns leftover magnesium into a valuable, high-quality product that can be sold, reducing waste and its impact on the environment. Beyond its advanced efficiency, the EALNF system brings innovation to address major environmental concerns associated with lithium extraction. Unlike conventional methods that deplete vital water resources in arid regions, the technology produces freshwater as a by-product.
Dr Li said the system was flexible and ready for large-scale use, meaning it can quickly expand from testing to full industrial operations. “This breakthrough is crucial for avoiding a future lithium shortage, making it possible to access lithium from hard-to-reach sources and helping power the shift to clean energy.”
“Our scalable process minimizes environmental impact while maximizing resource utilization,” according to the researchers’ article in Nature Sustainability, “thereby catalysing the shift toward a more sustainable future.”
Thanks to long-time Slashdot reader schwit1 for sharing the news.