Electrochemically treating aqueous thiocyanate solutions
CA 1188250 A · Owner: Byerley, John J. · Inventors: Byerley, John J.; Enns, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the recovery of cyanide from thiocyanate. An aqueous solution containing thiocyanate is introduced into an electrochemical reactor. The reactor is activated for an appropriate time period while the pH of the solution is maintained in the range of 1 to 4. The cyanide formed can be recovered in various, ways including recovery as hydrocyanic acid. Where desired, the thiocyanate can be oxidized in the reactor for a longer time period while the pH of the solution is maintained in the range of 10 to 12, to produce relatively harmless products, for example cyanate ammonia, carbon dioxide and nitrogen. The process is particularly useful to process thiocyanate containing wastes …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 4, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 2002.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.