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Main Title Development and application of ion exchange silver recovery system.
Other Authors
Author Title of a Work
Buyers, Archie G.
Moss, Edward R.
Kramer, Gary R.
Publisher New Mexico Univ Albuquerque,
Year Published 1974
Report Number AD-A011 945; AFWL-TR-73-193; F29601-72-C-0024
OCLC Number 908564097
Subjects Industrial Chemistry and Chemical Processing ; Polymer Chemistry ; Civil Engineering ; Silver ; Ion exchange ; Photographic fixers ; Costs ; Fouling ; Sulfur ; Colloids ; Chemical equilibrium ; Sulfides ; Ion exchange resins ; Wastes(industrial) ; Antifouling
Library Call Number Additional Info Location Last
EKBD  AD-A011 945 Microfiche collection Research Triangle Park Library/RTP, NC 05/11/2015
Collation 84 pages.
"AD-A011 945." "AFWL-TR-73-193." "F29601-72-C-0024." "Filmed 8-11-75 NTIS." Microfiche.
Contents Notes
A study was conducted on the feasibility and extent of application of the ion exchange process as a method for silver recovery from spent photographic fixer solutions. The study demonstrates the technical feasibility of using ion exchange systems to recover silver from photographic fixer solutions for silver concentrations between 0.05 and 0.5 gm/l. However, ion exchange system operation at or above silver concentrations of 0.5 gm/l appears to negate any cost advantages over the electrolytic recovery systems. In addition, operation at concentrations under 0.05 gm/l requires about 10 times the resin needed at concentrations of 1.0 mg/l. A previously postulated resin-fouling mechanism was supported by experimental exchange data from a series of synthetic spent fixer solutions. Fouling during silver stripping may be caused by the formation of colloidal sulfur and silver sulfide particles with electrostatic charges neutralized by anionic exchange sites of the resin. A re-examination proved that an aqueous sodium acetate prewash of an anionic exchange column is a satisfactory method of preventing resin fouling by inorganic colloids.