Institutul De Cercetari Si Proiectari Pentru Epurarea Apelor Reziduale,Ro
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Priority to RO124162ApriorityCriticalpatent/RO95470B1/en
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The process comprises washing with minimum 1 per cent concn. sodium hydroxide soln., to solubilise the photosensitive layer on its support. Settling, flotation and/or filtration then separates the silver sludge, for drying and melting using alkaline fluxes. The sepd. silver, the washed and dried support and the spent soln. are all able to be re-used.
RO124162A1986-07-161986-07-16Process for recovering silver from photosensitive material waste
RO95470B1
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