Recovery of metals
US4033764A · kind A · utility
32Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1975 |
| Grant date | Jul 5, 1977 |
| Priority date | — |
| Expiry date | May 20, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/58
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Metal ions may be scavenged from solution by means of a complexing agent comprising an inorganic substrate, such as a clay mineral, with covalent organic molecules, such as onium compounds, chemically bonded to the substrate, the covalent organic molecules containing free coordinating groups. The complexing agents are particularly useful in scavenging environmentally harmful metal ions such as mercury from industrial effluents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.