Published February 29, 2000
| Version v1
Patent
Nitrate reduction
Description
Nitrates are reduced to nitrogen gas by contacting the nitrates with a metal to reduce the nitrates to nitrites which are then contacted with an amide to produce nitrogen and carbon dioxide or acid anions which can be released to the atmosphere. Minor amounts of metal catalysts can be useful in the reduction of the nitrates to nitrites. Metal salts which are formed can be treated electrochemically to recover the metals. Many industrial and agricultural processes result in nitrate wastes which would be harmful to the environment if released
Availability note (English)
Available from Patent and Trademark Office, Box 9, Washington, DC 20232 (US)Additional details
Publishing Information
- Imprint Pagination
- [10 p.]
- IPC:
- Int. Cl. C02F 1/461
- IPC
- Int. Cl. C02F 1/461
- Patent number
- US patent document 8-857,232
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 31022411
- Subject category
- S99: GENERAL AND MISCELLANEOUS; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; S54: ENVIRONMENTAL SCIENCES;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- CATALYSTS; LIQUID WASTES; NITRATES; NITRITES; NITROGEN; REGENERATION; SELECTIVE CATALYTIC REDUCTION; WASTE PROCESSING
- Descriptors DEC
- CHEMICAL REACTIONS; DENITRIFICATION; ELEMENTS; MANAGEMENT; NITROGEN COMPOUNDS; NONMETALS; OXYGEN COMPOUNDS; PROCESSING; WASTE MANAGEMENT; WASTES
Optional Information
- Secondary number(s)
- US patent application 8-857,232