Chemical process for the denitrification of water
US5069800A · kind A · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Aug 22, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/903
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A chemical process for the denitrification of water comprising treating water with a metal sufficiently electropositive to decompose the water while regulating the pH within a range effective to permit efficient reduction of nitrate ion. The pH is regulated with alkali in a manner that avoids metal oxide formation and loss of metal by decomposition of water and results in the selective reduction of nitrate ion in the presence of sulfate and chloride ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.