REFINING METHOD FOR METAL SALT, REFINING DEVICE FOR METAL SALT AND REFINING DEVICE FOR MAGNESIUM CHLORIDE

摘要

PPROBLEM TO BE SOLVED: To provide a treatment method and a treatment device where a nitrogen compound as impurities is removed without varying the pH of an aqueous solution as an object, and the objective refining of a metal salt such as magnesium chloride can be suitably performed. PSOLUTION: At least a part of a pair of electrodes is dipped into the water to be treated comprising a metal salt such as magnesium chloride and impurities decomposable by an electrochemical means such as ammonium chloride, and the ammonium chloride as impurities is electrochemically treated without varying the pH of the water to be treated. PCOPYRIGHT: (C)2006,JPO&NCIPI