Treatment of cyanide-ferrocyanide effluents
US4615873A · kind A · utility
19Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Apr 29, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/904
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for treatment of cyanide-containing aqueous effluents in which ferrocyanide present is precipitated with a metal other than copper, preferably zinc either prior to or simultaneously with the treatment of the effluent with sulfur dioxide and air in the presence of soluble copper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.