Perchlorate destruction
US7399725B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 20, 2005 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Aug 16, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J49/57
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Perchlorate is removed and effectively destroyed in devices and methods that employ a eluting solvent in which the anion of an acid solubilizes Ti (III), which may be electrochemically generated or added in situ. Using such solvents, destruction of perchlorate is unexpectedly and several orders of magnitude faster than using solvents without solubilizing acids. In most preferred aspects, the solubilizing acid is methane sulfonic acid and/or sulfamic acid, and Ti (III) is electrochemically generated. Perchlorate destruction will then result in formation of Ti (IV), which may be present in the eluent in a subsequent elution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.