Direct lithium extraction has been touted as a method to reduce mining impacts in South America, but experts are skeptical about its readiness for large-scale deployment.
Mining companies are promoting new technologies that can extract more lithium from the region's salt flats with lower environmental impacts. However, environmentalists question the technology's scalability and expense.
More research is needed to determine the effects of direct lithium extraction on scarce freshwater resources in the region.
The "lithium triangle," spanning Argentina, Bolivia, and Chile, holds over half of the world's known lithium reserves. Lithium is found in salty brine beneath the region's salt flats, which are among the driest places on Earth.
Author's summary: Green lithium extraction faces scrutiny over water use and scalability.