Solution dewatering with concomitant ion removal
US6602418B2 · kind B2 · utility
5Cited by
21References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2001 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Jan 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/448
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
One of the biggest needs in the separations and waste handling and reduction area is a method for dewatering ion-containing solutions. Unexpectedly, it has been found that phosphazene polymers can discriminate between water and metal ions, allowing water to pass through the membrane while retaining the ions. This unexpected result, along with the inherent chemical and thermal stability of the phosphazene polymers, yields a powerful tool for separating and dewatering metal-ion-containing solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.