In a groundbreaking development for lithium extraction technology, researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) in collaboration with other institutions have unveiled a crystalline carbon nitride membrane that could revolutionize the lithium recovery industry.
Published in Science Advances, the study introduces a unique membrane design inspired by biological ion channels, showcasing exceptional efficiency and durability in separating lithium ions from magnesium ions in salt-lake brine. The membrane boasts a selectivity ratio of 1,708 for extracting highly dilute lithium ions from concentrated magnesium ions, a crucial advancement in addressing the high magnesium content in lithium sources.
The membrane’s innovative structure, combining crystalline and amorphous forms of polymer carbon nitride, enables precise exclusion of magnesium ions while facilitating smooth lithium-ion transport akin to natural ion channels. This design not only enhances selectivity but also improves stability, opening up possibilities for diverse applications beyond lithium extraction.
As the demand for lithium escalates due to the electric vehicle and renewable energy sectors, efficient and sustainable extraction methods are vital. The newly developed membrane technology offers a promising solution to meet this demand while minimizing the environmental impact of lithium mining.
Prof. Gao Jun, co-corresponding author of the study, emphasized the membrane’s potential contribution to environmental protection efforts and resource recovery efficiency. This advancement marks a significant step towards enhancing the feasibility of lithium extraction and supporting the global transition to renewable energy and electric mobility.
The research signifies a crucial milestone in advancing lithium recovery technologies, providing a pathway towards sustainable and efficient resource extraction methods for meeting the evolving needs of a greener future.
