Installation and Method for Separating at Least One Ionic Species from a Solution Comprising at Least Said Ionic Species and Lithium

A method for separating at least one multivalent cationic species from a solution comprising at least said multivalent cationic species and lithium,

• said separation method comprising:
• at least one capture device (3) comprising an entry (2) and an exit (4) is provided, the capture device (3) comprising, between the entry (2) and the exit (4), a ion exchange microfiber product (21) having a higher affinity for multivalent cations than for monovalent cations,
• with a circulation system (5), the solution is circulated from the entry (2) to the exit (4) in contact with the microfiber product (21), said microfiber product (21) capturing said multivalent cationic species.

A method of regenerating a microfiber product (21) used for the separation of at least one multivalent cationic species from a solution comprising at least said ionic species and lithium, wherein:

• a regeneration circulation device (12) circulates a release product (10) in contact with the microfiber product (21), said ion exchange microfiber product (21) thus releasing said multivalent cationic species,
• the regeneration circulation device (12) circulates a recharge product (11) comprising lithium in contact with the microfiber product (21), said microfiber product (21) then charging with lithium.

(canceled)