Process for removal of ammonia and acid gases from contaminated waters

Patent · Tue Oct 15 00:00:00 EDT 1985

OSTI ID:6046261

King, C J; MacKenzie, P D

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.

• Assignee: The United States of America as represented by the United States Department of Energy
• Patent Number(s): US 4547293
• OSTI ID: 6046261
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALCOHOLS
AMMONIA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
HEATING
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL WASTES
INORGANIC ACIDS
ION EXCHANGE
ION EXCHANGE MATERIALS
LIQUID WASTES
MATERIALS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORIC ACID
POLLUTION ABATEMENT
PROCESS SOLUTIONS
PURIFICATION
REMOVAL
SOLUTIONS
WASTE WATER
WASTES
WATER
WATER POLLUTION ABATEMENT
WATER TREATMENT