▎ 摘　　要

NOVELTY - A combined processing method for purification of lithium containing solutions involves (a) passing lithium-containing solution to greater than or equal to 1 purification steps to produce substantially purified lithium chloride solution; and (b) passing the substantially purified lithium chloride solution to an electrolysis step in which lithium hydroxide monohydrate is produced, where greater than or equal to 1 purification steps comprise either or both of 1st purification step in which lithium-containing solution is contacted with titanate adsorbent on which lithium ions are adsorbed while rejecting substantially all other cations, the recovery of lithium from the adsorbent providing a partially purified lithium-containing solution, and 2nd purification step in which graphene-based filter medium is used to provide a further purified lithium containing solution. USE - A combined processing method for purification of lithium-containing solutions for use in producing battery grade lithium chemicals (claimed). ADVANTAGE - The nanotube/fiber adsorbents can be readily separated from a liquid after the sorption by filtration, sedimentation, or centrifugation because of their fibril morphology, significantly reducing the cost of separation of the adsorbent from the liquid. The chlorine and hydrogen produced in the electrolysis step may be combined to produce hydrochloric acid for use elsewhere, bringing potential efficiencies and potential cost savings. The electrolysis step is conducted using chlor-alkali technology at less than or equal to 50 degrees C, providing a current efficiency of greater than or equal to 70%, preferably greater than or equal to 75, which is due to the quality or purity of the substantially purified lithium solution being fed to the electrolyzers, bringing beneficial cost implications.