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Title: Process for removal of ammonia and acid gases from contaminated waters

Abstract

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.

Inventors:
;
Issue Date:
OSTI Identifier:
5822303
Application Number:
ON: DE83018096
Assignee:
ERA-08-054948; EDB-83-179397
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 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)

Citation Formats

King, C.J., and Mackenzie, P.D. Process for removal of ammonia and acid gases from contaminated waters. United States: N. p., 1982. Web.
King, C.J., & Mackenzie, P.D. Process for removal of ammonia and acid gases from contaminated waters. United States.
King, C.J., and Mackenzie, P.D. Fri . "Process for removal of ammonia and acid gases from contaminated waters". United States.
@article{osti_5822303,
title = {Process for removal of ammonia and acid gases from contaminated waters},
author = {King, C.J. and Mackenzie, P.D.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {9}
}