Process and apparatus for the removal of dissolved silver complex anions from aqueous liquids

Silver complex anions present in dissolved form in an aqueous liquid are removed by causing the liquid to flow along the surface of at least one element in the form of a sheet or web which incorporates an anion exchange resin as scavenging agent in particulate form dispersed in a water-permeable bin...

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Bibliographische Detailangaben
1. Verfasser:	DE RYCKE GINO,LUC
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CINEMATOGRAPHY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTROGRAPHY FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HOLOGRAPHY METALLURGY PERFORMING OPERATIONS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Silver complex anions present in dissolved form in an aqueous liquid are removed by causing the liquid to flow along the surface of at least one element in the form of a sheet or web which incorporates an anion exchange resin as scavenging agent in particulate form dispersed in a water-permeable binder layer. In a particular embodiment shown in the accompanying drawing a solution containing anions containing complexed silver stemming from fixed photographic silver halide emulsion materials is pumped into a column (12) containing a spirally wound web (13) carrying particulate anion exchange resin in a water-permeable binder layer. The silver-containing solution flows between the convolutions of the spirally coiled web, in contact with said layer whereby the anions are scavenged without clogging of the column when hydrophilic colloid material is present in said solution.