Fixation of dissolved metal species with a complexing agent
US4659512A · kind A · utility
29Cited by
26References
26Claims
0Family size
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Key dates
| Filing date | Dec 21, 1983 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Dec 21, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2201/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for removing metal species from solution comprising passing the liquid over a composition comprising a support such as a porous silicate glass or silica gel or charcoal having interconnected pores and containing water soluble amine complexing agents absorbed on the support capable of forming a stable complex with the metal species. The preferred amine complexing agent is triethylenetetramine. The process is especially useful for removing radioactive cobalt from liquid waste streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.