Cleantech Collaborates with DuPont to Advance Nanofiltration Lithium Processing Technology Cleantech Lithium, a clean technology company, recently announced a collaboration with chemical giant DuPont to jointly promote the application of nanofiltration technology in lithium extraction processes. This technology utilizes selective separation membranes to efficiently extract lithium from brine or recycled solutions, significantly reducing energy consumption and carbon emissions compared to traditional evaporation methods, while also improving lithium recovery rates. The two parties plan to deploy this technology in lithium-rich regions such as Chile to support the development of a sustainable lithium supply chain.