Continuous electrical pumping membrane process for seawater lithium mining
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Physical Science and Engineering (PSE) Division
KAUST Catalysis Center (KCC)
Material Science and Engineering Program
Chemical Science Program
Chemical Engineering Program
Permanent link to this recordhttp://hdl.handle.net/10754/669575
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AbstractSeawater contains significantly larger quantities of lithium than is found on land, thereby providing an almost unlimited resource of lithium for meeting the rapid growth in demand for lithium batteries. However, lithium extraction from seawater is exceptionally challenging because of its low concentration (~0.1-0.2 ppm) and an abundance of interfering ions. Herein, we creatively employed a solid-state electrolyte membrane, and design a continuous electrically-driven membrane process, which successfully enriches lithium from seawater samples of the Red Sea by 43?000 times (i.e., from 0.21 to 9013.43 ppm) with a nominal Li/Mg selectivity >45 million. Lithium phosphate with a purity of 99.94% was precipitated directly from the enriched solution, thereby meeting the purity requirements for application in the lithium battery industry. Furthermore, a preliminary economic analysis shows that the process can be made profitable when coupled with the Chlor-alkali industry.
CitationLi, Z., Li, C., Liu, X., Cao, L., Li, P., Wei, R., … Lai, Z. (2021). Continuous electrical pumping membrane process for seawater lithium mining. Energy & Environmental Science, 14(5), 3152–3159. doi:10.1039/d1ee00354b
SponsorsThis work was financially supported by the KAUST baseline fund BAS/1/1375-01 and the KAUST competitive research fund URF/1/3769-01.
PublisherRoyal Society of Chemistry (RSC)
JournalEnergy and Environmental Science
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