Title:
LITHIUM RECOVERY FROM LIQUID STREAMS USING SOLUTE-PERMEABLE MEMBRANES
Document Type and Number:
WIPO Patent Application WO/2024/073485
Kind Code:
A8
Abstract:
Methods and systems directed to recovery of lithium (e.g., lithium salts) from liquid streams are provided. In some embodiments, methods relate to obtaining lithium (e.g., as a solid lithium salt) by removing at least a portion of liquid from a feed stream to form a concentrated stream with respect to solubilized lithium cations. Liquid removal may include transporting at least a portion of the feed stream to a membrane separator and/or a humidifier. Some methods include removing impurities (e.g., non-lithium cations) from the concentrated stream (e.g., via precipitation and/or crystallization). In some embodiments, solutions containing solubilized lithium cations and anions are electrochemically-treated such that first solubilized anions are replaced with second, different anions. In some embodiments, solid lithium salt containing at least a portion of the lithium cations and the second anions is obtained (e.g., via precipitation and/or crystallization following concentration of the electrochemically-treated solution in a humidifier).
Inventors:
KOTA SIVA (SG)
LE HIEP (SG)
SETH KUSHAL (US)
LOKARE OMKAR (US)
CHOONG LOOH (US)
STOVER RICHARD (US)
LE HIEP (SG)
SETH KUSHAL (US)
LOKARE OMKAR (US)
CHOONG LOOH (US)
STOVER RICHARD (US)
Application Number:
PCT/US2023/075227
Publication Date:
May 10, 2024
Filing Date:
September 27, 2023
Export Citation:
Assignee:
GRADIANT CORP (US)
International Classes:
B01D61/42; B01D61/44; B01D67/00; C22B26/10; C22B26/12; B01D69/12
Attorney, Agent or Firm:
MAHER, Andrew, G. et al. (US)
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