Compositions for removing metal ions from aqueous process solutions and methods of use thereof
US6843923B2 · kind B2 · utility
11Cited by
20References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Apr 5, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a composition and process using the composition for removing metal ions from aqueous process solutions. These compositions include a non-metallic compound and a suitable carrier. In one embodiment, the non-metallic compound is a thiuram. In another embodiment, the non-metallic compound can further include a dithiocarbamate. These compositions are contacted with the metal ions in the aqueous process solution having a wetting agent to form an organometallic complex precipitate. The precipitate can then be separated from the aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.