Method of disposing of photographic fixer and developer
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United States of America Patent
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Jan 4, 1994
Grant Date -
N/A
app pub date -
Nov 2, 1992
filing date -
Nov 2, 1992
priority date (Note) -
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Abstract
A method of disposing of photographic fixer and developer. The fixer and developer, preferably in equal quantities, are mixed and the mixture combined with an absorbing polymer which is substantially insoluble in the mixture of photographic fixer and developer. The polymer is capable of absorbing at least approximately 20 times its weight of the electrolytic aqueous base solution of fixer and developer. Once immobilized, the silver precipitates as insoluble silver sulfide and the mixture can be disposed of in a landfill or similar site designed to receive nontoxic waste.
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