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Sonoelectrochemical recovery of silver from photographic process…
- https://www.sciencedirect.com/science/article/pii/S1350417799000279#:~:text=Sonoelectrochemical%20recovery%20of%20silver%20from%20photographic%20processing%20solutions,Fig.%20...%203%20Experimental.%20...%20More%20items...%20
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How to Recover Silver from Waste Photographic Solutions
- https://www.911metallurgist.com/silver-recovery-waste-photographic/
- Although several variables may affect the potential quantity of silver recoverable from waste photographic solutions, a gallon of fixing bath from X-ray processors will contain about 1.2 troy ounces of silver; most other film fixing baths will contain from 0.4 to 0.6 troy ounce, and pape…
US4978433A - Method for recovering silver from photographic …
- https://patents.google.com/patent/US4978433A/en
- There is disclosed a method for recovering silver from photographic processing solution by electrolysis, in which method the cathode potential is set at a potential range wherein a precipitate of silver sulfide is formed in the electrolytic cell. According to the method, intensive silver recovering leading to low concentration of residual silver in the solution is achieved.
US5288728A - Process for recovering silver from photographic …
- https://patents.google.com/patent/US5288728A/en
- Silver is recovered from a mixture of seasoned photoprocessing solutions by contacting the solutions with a mercapto-s-triazine or water-soluble salt thereof, the mercapto-s-triazine having the formula ##STR1## wherein: R is hydrogen, --NH 4 , --OH, alkyl having 1 to 8 carbon atoms, alkoxy having 1 to 8 carbon atoms, phenyl, cyclohexyl, oxazinyl, phenoxy, --NR' 2 or SR"; wherein …
Sonoelectrochemical recovery of silver from photographic …
- https://www.sciencedirect.com/science/article/pii/S1350417799000279
- Silver electrodeposition Sonoelectrochemistry 1. Introduction The primary sources of recoverable silver from photographic processing solutions are the ‘fix’ (dilute aqueous Na 2 S 2 O 3 /NaHSO 3) and the ‘bleach–fix’ solutions (dilute aqueous Na 2 S …
Recovering Silver from Photographic Materials
- https://www.911metallurgist.com/blog/recovering-silver-from-photographic-materials
- Photographic silver recovery procedure Fill a five-gallon plastic bucket with bleach. Dip the film into the bleach and move it around. When the film is transparent, all the silver has been removed. When the bleach has taken all the silver it can hold, it will no longer make the film transparent. Time for a new batch of bleach.
Silver recovery from silver-rich photographic processing solutions …
- https://www.researchgate.net/publication/270667579_Silver_recovery_from_silver-rich_photographic_processing_solutions_by_copper
- photographic effluent. Electrolysis and metallic replacement are the most common technologies available to photographic processors for recovering …
Method for recovering silver from photographic processing …
- https://www.freepatentsonline.com/4978433.html
- There is disclosed a method for recovering silver from photographic processing solution by electrolysis, in which method the cathode potential is set at a potential range wherein a precipitate of silver sulfide is formed in the electrolytic cell.
US5238543A - Recovery of silver from photographic film and …
- https://patents.google.com/patent/US5238543A/en
- u.s. pat. no. 3,960,550 discloses a process for recovering silver from a photographic film having a polymer base and a silver bearing emulsion layer coated thereon comprising immersing and …
RECOVERY OF SILVER FROM PHOTOGRAPHIC PROCESSING …
- https://www.freepatentsonline.com/3832453.html
- We claim 1. In a method for recovering silver from an exhausted photographic fix solution or bleach-fix solution by mixing and reacting a first flowing stream of said solution with a second flowing stream of an aqueous sulfide solution to form silver sulfide particles and separating the particles of silver sulfide and the residual solution from one another, the improvement …
Method of recovering silver from photographic processing …
- https://www.freepatentsonline.com/5244777.html
- Silver can be recovered as silver sulphide from the fixers by addition of an aqueous solution of water soluble sulphides. These include the alkali metal, alkaline earth metal and ammonium sulphides and polysulphides. Silver can be recovered as silver sulphide by contacting the seasoned fixer with sulphides that are essentially water insoluble.
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