Process for removal of ammonia and acid gases from contaminated waters
Contaminating basic gases, i.e., ammonia and acid gases, e.g., carbon dioxide, are removed from process waters or waste waters in a combined extraction and stripping process. Ammonia in the form of ammonium ion is extracted by an immiscible organic phase comprising a liquid cation exchange component, especially an organic phosphoric acid derivative, and preferably di-2-ethyl hexyl phosphoric acid, dissolved in an alkyl hydrocarbon, aryl hydrocarbon, higher alcohol, oxygenated hydrocarbon, halogenated hydrocarbon, and mixtures thereof. Concurrently, the acidic gaseous contaminants are stripped from the process or waste waters by stripping with stream, air, nitrogen, or the like. The liquid cation exchange component has the ammonia stripped therefrom by heating, and the component may be recycled to extract additional amounts of ammonia.
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- ERA-08-054948; EDB-83-179397
- Application Number:
- ON: DE83018096
- OSTI ID:
- 5822303
- Country of Publication:
- United States
- Language:
- English
Similar Records
Process for removal of ammonia and acid gases from contaminated waters
Simultaneous stripping and solvent extraction for the recovery of ammonia and acid gases from wastewaters
Related Subjects
AMMONIA
SOLVENT EXTRACTION
CARBON DIOXIDE
WASTE WATER
DECONTAMINATION
DISSOLVED GASES
PH VALUE
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CLEANING
EXTRACTION
FLUIDS
GASES
HYDRIDES
HYDROGEN COMPOUNDS
LIQUID WASTES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SOLUTES
WASTES
WATER
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)