| 摘要 |
<P>PROBLEM TO BE SOLVED: To highly remove zinc from a zinc-containing solution, and to efficiently recover the same. <P>SOLUTION: The method comprises: an adsorption stage where a zinc-containing solution is brought into contact with a chelate resin, and zinc is adsorbed on the chelate resin; a regeneration stage where a hydrochloric acid solution is brought into contact with the chelate resin with zinc adsorbed in the adsorption stage, thus zinc is desorbed from the chelate resin with the hydrochloric acid solution, and further, an anionic zinc-chloride ion complex is formed from zinc; a concentration stage where the regenerated waste solution produced in the regeneration stage is brought into contact with an anion exchange resin, and the anionic zinc-chloride ion complex in the regenerated waste solution is adsorbed on the anion exchange resin; and a recovery stage where elution water such as water is brought into contact with the anion exchange resin with the anionic zinc-chloride ion complex adsorbed in the concentration stage, and the anionic zinc-chloride ion complex is desorbed from the anion exchange resin with the elution water. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
