Recent Advancements in Rare Earth Recycling
1. Microbial Recycling Techniques
Researchers are exploring the use of microbial partners, such as Gluconobacter bacteria, which naturally produce organic acids that can extract rare earths from spent catalysts and fluorescent phosphors. This approach aims to reduce the environmental impact of traditional methods.
2. Copper Salt Leaching Method
A team led by Nlebedim has developed a copper salt leaching process to recover rare earths from shredded electronics and magnet leftovers. This method can recover up to 98% of rare earths with a lower carbon footprint compared to traditional mining and processing methods.
3. Flash Joule Heating
Researchers at Rice University have developed a flash joule heating method that uses intense electricity to separate rare earth elements from other materials by heating them to high temperatures. This process is designed to capture toxic chemicals and could be powered by renewable energy sources.
4. Circular Economy and Traceability
Efforts to improve traceability in the rare earth supply chain include the development of blockchain-based systems like CSyARES. Such systems aim to enhance sustainability and accountability by leveraging the transparency and immutability of blockchain technology.
5. Industrial Implementation
Companies like TdVib are setting up pilot plants to use innovative recycling methods on a commercial scale. For instance, TdVib’s pilot plant aims to produce two tons of rare earth oxides per month from old hard disk drives.
These advancements are pushing towards a more sustainable and efficient recycling of rare earth elements for use in EVs and other applications.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-advancements-are-being-made-in-the-recycling-of-rare-earth-elements-for-evs/
