Abstract: Disclosed are an apparatus and a method for purifying Li7 ions from reactor coolant radioactive material and adjusting pH of the reactor coolant. The apparatus comprises a radioactive metal ion recovery unit comprising a first negative electrode member having a negative (?) electrode connected thereto and a first positive electrode member having a positive (+) electrode connected thereto, and an Li ion separation/concentration unit.

Abstract: Disclosed are an apparatus and a method for purifying reactor coolant radioactive material and adjusting the pH of the reactor coolant, to replace and overcome the disadvantages of the purification and Li adjustment of a reactor coolant, by conventional ion-exchange resins; to concentrate, store and reuse Li7, which is naturally produced in a nuclear reactor during power operation, without injecting expensive LiOH obtained by removing Li6 and concentrating only Li7; or to solve the problem that lithium (Li+) ions used as a pH adjusting agent are removed together with radioactive metal ion materials which is and adverse effect occurring when the lithium ions are applied to a reactor coolant purification apparatus.