Cyanide removal from aqueous streams
US4537686A · kind A · utility
38Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1984 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Mar 8, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/904
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The cyanide content of waste waters containing the same is removed by treatment with sulfur dioxide or an alkali or alkaline earth metal sulfite or bisulfite in the presence of excess oxygen and a metal catalyst which is perferably copper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.