| 摘要 |
The present invention provides a method for selectively removing metal ions of interest from a solution ( 12 ), such as the wastewater from a chemical mechanical polishing process. The method comprises contacting a solution ( 12 ) containing solid particles, an oxidizing agent and a first concentration of the metal ions with an ion-exchange resin ( 20 ), such as a crosslinked poly-4-vinylpyridine resin, that is resistant to damage by the oxidizing agent and that is operative when in contact with the solution ( 12 ) to exchange selected ones of the metal ions in the solution for selected preferred ions in the ion-exchange resin thereby to produce a treated solution ( 22 ) having a second concentration of the metal ions that is lower than the first concentration. The present invention also relates to an apparatus ( 100 ) and system ( 500 ) for use with the method of the present invention.
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