Catalytic destruction of perchlorate in ferric chloride and hydrochloric acid solution with control of temperature, pressure and chemical reagents
US6800203B2 · kind B2 · utility
2Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Dec 11, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/902
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method is described to decompose perchlorate in a FeCl3/HCl aqueous solution such as would be used to regenerate an anion exchange resin used to remove perchlorate. The solution is mixed with a reducing agent, preferably an organic alcohol and/or ferrous chloride, and can be heated to accelerate the decomposition of perchlorate. Lower temperatures may be employed if a catalyst is added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.