Adsorbent for metal ions and method of making and using
US6093664A · kind A · utility
4Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1999 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Jul 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2508
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method comprises the step of spray-drying a solution or slurry comprising (alkali metal or ammonium) (metal) hexacyanoferrate particles in a liquid, to provide monodisperse, substantially spherical particles in a yield of at least 70 percent of theoretical yield and having a particle size in the range of 1 to 500 micrometers, said particles being active towards Cs ions. The particles, which can be of a single salt or a combination of salts, can be used free flowing, in columns or beds, or entrapped in a nonwoven, fibrous web or matrix or a cast porous membrane, to selectively remove Cs ions from aqueous solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.