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US 2025/0326641 A1Published application
Selective treatment of nitrate for brine regeneration
AssigneeToxsorb Ltd.
InventorsRotem SADE, Yotam GONEN, Amos ROICH, Tamir CARMON, MIchael KOLLMANN
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Abstract
The present disclosure concerns processes for removal of nitrate from nitrate-rich brines, typically selective removal that permits reclaiming the nitrate after such removal.
Claims29
A process for removal of nitrate from nitrate-containing brine, the process comprising:
- contacting, in a reactor, said nitrate-containing brine with an active medium, under conditions permitting conversion of said nitrate into nitrogen oxide gaseous products, and
- removing said nitrogen oxide gaseous products from the reactor, thereby reducing the concentration of said nitrate in the nitrate-containing brine,
- said conditions being selected to minimize formation of ammonia in the reactor.
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A process for recovery of nitrate in the form of nitric acid from nitrate-containing brine, the process comprising:
- contacting, in a reactor, said nitrate-containing brine with an active medium that comprises activated carbon, under conditions permitting conversion of said nitrate into nitrogen oxide gaseous products,
- removing said nitrogen oxide gaseous products from the reactor, and
- treating said nitrogen oxide gaseous products in one or more treatment stages, thereby obtaining nitric acid.
Dependencies are inferred from the claim text.