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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 steam, 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:
 [1];  [2]
  1. (Kensington, CA)
  2. (Berkeley, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865632
Patent Number(s):
4547293
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; removal; ammonia; acid; gases; contaminated; waters; contaminating; basic; carbon; dioxide; removed; waste; combined; extraction; stripping; form; ammonium; extracted; immiscible; organic; phase; comprising; liquid; cation; exchange; component; especially; phosphoric; derivative; preferably; di-2-ethyl; hexyl; dissolved; alkyl; hydrocarbon; aryl; alcohol; oxygenated; halogenated; mixtures; concurrently; acidic; gaseous; contaminants; stripped; steam; air; nitrogen; therefrom; heating; recycled; extract; additional; amounts; stripping process; alkyl hydrocarbon; phase comprising; contaminated water; waste water; cation exchange; organic phase; carbon dioxide; phosphoric acid; halogenated hydrocarbon; acid gas; acid gases; waste waters; acid derivative; combined extraction; oxygenated hydrocarbon; immiscible organic; gaseous contaminant; gaseous contaminants; change component; additional amount; process water; /210/95/

Citation Formats

King, C. Judson, and MacKenzie, Patricia D. Process for removal of ammonia and acid gases from contaminated waters. United States: N. p., 1985. Web.
King, C. Judson, & MacKenzie, Patricia D. Process for removal of ammonia and acid gases from contaminated waters. United States.
King, C. Judson, and MacKenzie, Patricia D. Tue . "Process for removal of ammonia and acid gases from contaminated waters". United States. https://www.osti.gov/servlets/purl/865632.
@article{osti_865632,
title = {Process for removal of ammonia and acid gases from contaminated waters},
author = {King, C. Judson and MacKenzie, Patricia 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 steam, 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 = {1985},
month = {1}
}

Patent:

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