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US5238543A - Recovery of silver from photographic film and photographic ...
- https://patents.google.com/patent/US5238543A/en#:~:text=In%20the%20process%2C%20a%20silver%20bearing%20emulsion%20layer,an%20electrolysis%20treatment%20to%20recover%20metallic%20silver%20therefrom.
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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…
Recovering Silver from Photographic Materials
- https://www.911metallurgist.com/blog/recovering-silver-from-photographic-materials
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Method for the recovery of silver from waste …
- https://www.osti.gov/doepatents/biblio/5364206
- Abstract. The method of the present invention is directed to the recovery of silver from spent photographic fixer solutions and for providing an effluent essentially silver-free that is suitable for discharge into commercial sewage systems. The present method involves the steps of introducing the spent photographic fixer solution into an alkaline hypochlorite solution.
US5238543A - Recovery of silver from photographic film …
- https://patents.google.com/patent/US5238543A/en
- A process which incorporates the recovery of silver from photographic film into the recovery of silver from photographic development waste solution is …
How to Reclaim Silver From Old Photographs — Reclaim, …
- https://www.specialtymetals.com/blog/2020/8/24/silver-is-all-around-photographs
- Classic, century-old black and white photographs were often printed using gelatin and copious quantities of silver that can still be extracted. Just be sure that the old photo you have bought isn’t from a famous photographer from days gone by. If it is, its collectible value could far exceed the value of any silver it contains.
US4759914A - Method for recovering silver from waste …
- https://patents.google.com/patent/US4759914A/en
- Silver is recovered from photographic emulsion by a process comprising oxidizing whereby the emulsion is oxidized with an acid solution of 10-26 percent ferric chloride at a pH of up to about 2. US4759914A - Method for recovering silver from waste photographic film and paper - …
Method for the recovery of silver from waste …
- https://www.osti.gov/biblio/5364206-method-recovery-silver-from-waste-photographic-fixer-solutions
- Treatability data on actual waste show that titania-based photocatalysis can be used to remove silver ions from black and white photoprocessing waste. The silver ion is reduced to its metallic form producing particles comparable in size to the TiO{sub 2} catalyst particles. The mass of silver recovered approaches three times that of the titania.
Recovery of Silver from Photographic Waste: …
- http://umpir.ump.edu.my/id/eprint/3143/1/CD5832_MOHD_ASRAF_CHE_AMAT.pdf
- recover the silver from photographic waste. This research is to investigate the ability of electrolysis process to recover the silver from photographic waste. In the process of electrolysis, or commonly known as electrolytic silver recovery, a direct current is passed through a silver-rich solution between a positive electrode (the anode) and a
Method of recovering silver from solid and liquid photographic …
- https://www.freepatentsonline.com/4437889.html
- Method of recovering silver from solid and liquid photographic waste 1. A method of recovering silver from a silver-containing photographic liquid fixer waste, comprising: (a) heating the... 2. The method defined in claim 1 wherein the temperature in …
Method for recovering silver from waste photographic …
- https://www.freepatentsonline.com/4759914.html
- Method for recovering silver from waste photographic film and paper 1. In a process for recovering silver from the emulsion of photographic materials, of the type wherein silver in the... 2. The process of claim 1 wherein the ferric chloride solution contains from …
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