Recovery of erythorbates from photographic solutions
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United States of America Patent
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Oct 10, 1995
Issued Date -
N/A
app pub date -
Oct 19, 1994
filing date -
Dec 30, 1992
priority date (Note) -
Expired
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Abstract
The present invention is directed to a method for the recovery of erythorbates from photographic solutions. In the disclosed method, the photographic solution is first acidified by passing it over an acidic cation exchange resin and the resultant solution is then passed over a weakly basic anion exchange resin.
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