Method of purification of salt solutions for electrolysis
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United States of America Patent
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May 29, 2001
Grant Date -
N/A
app pub date -
Aug 16, 1999
filing date -
Aug 28, 1998
priority date (Note) -
Expired
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Abstract
In a method of removing impurities, especially iodine and/or silica ions, from a salt solution to be used for electrolysis, the salt solution and zirconium hydroxide are brought into contact with each other under acidic conditions, and the zirconium hydroxide adsorbs the impurities. Thereafter, the zirconium hydroxide containing the adsorbed impurities is brought into contact with an aqueous solution at a higher pH value to desorb the impurities from the zirconium hydroxide, thereby enabling the zirconium hydroxide to be recycled.
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