Sub-critical partial oxidation for treatment of nitration wastes
US8801932B2 · kind B2 · utility
2Cited by
3References
24Claims
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Key dates
| Filing date | May 14, 2010 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Aug 27, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2301/066
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for treating wastewater containing nitro-hydroxy-aromatic compounds using oxidative sub-critical conditions. The wastewater to be treated is adjusted to contain excess hydroxide equivalent to greater than three moles of free hydroxide per mole of total nitro-hydroxy-aromatic compounds, and a sub-stoichiometric amount of an oxidant is supplied to the wastewater. The nitro-hydroxy-aromatic compounds may include nitro-phenol salts or nitro-cresol salts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.