Degradation of color photographic waste fix solution by anodic oxidation | Zendy

Ragauskas Romas | Zendy; Dikčius Arvydas | Zendy; Vengris Tomas | Zendy; Padarauskas Audrius | Zendy

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Degradation of color photographic waste fix solution by anodic oxidation

Author(s) -

Ragauskas Romas,

Dikčius Arvydas,

Vengris Tomas,

Padarauskas Audrius

Publication year - 2003

Publication title -

journal of chemical technology and biotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.64

H-Index - 117

eISSN - 1097-4660

pISSN - 0268-2575

DOI - 10.1002/jctb.747

Subject(s) - tetrathionate , thiosulfate , electrolysis , anode , chemistry , sulfur , inorganic chemistry , decomposition , sulfate , degradation (telecommunications) , ion exchange , electrolytic cell , cathode , electrode , ion , electrolyte , organic chemistry , computer science , telecommunications

By use of a capillary electrophoretic method for anion analysis the anodic oxidation of thiosulfate, present in color photo bleach‐fix solutions, was investigated. In a specially constructed electrolysis cell with a cation‐exchange membrane separating the electrode chambers and with a carbon flow‐through three‐dimensional anode the two‐stage anodic oxidation of S 2 O 3 2− anions was realized. In the first stage, S 2 O 3 2− anions were oxidized to a maximal degree to an intermediate compound – tetrathionate (S 4 O 6 2− ) – then S 4 O 6 2− anions were oxidized to the sulfate (SO 4 2− ), avoiding the decomposition of intermediate compounds and the formation of harmful sulfur compounds. © 2002 Society of Chemical Industry

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