Fixation of anionic materials with a complexing agent
US4659477A · kind A · utility
10Cited by
44References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 28, 1983 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Jul 28, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2201/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition comprising a support such as a porous silicate glass or silica gel or charcoal having interconnected pores and containing heavy metal cations of mercury, thallium, silver, platinum, palladium, lead or copper capable of forming a stable complex with an anion bonded to the support. The preferred heavy metal cation is a mercury cation. The composition is especially useful for removing radioactive iodine from liquid and gaseous waste streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.