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AssigneeUnited Arab Emirates University
InventorsAmeera Mohammad, Ali Al Marzouqi, Muftah El Naas
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This invention describes a novel recovery method of ammonia through the electrocoagulation process, which may be applied in the industrial as well as the environmental sectors. The present invention has a significant impact not only on recovering the ammonia content from the Solvay effluent, but also for recovering the ammonia from landfill leachate and different sources of wastewater where high concentrations of ammonia can be found. This invention has economic benefits in recovering ammonia and reducing the required energy in such processes. Another impact is the environmental one, where ammonia can cause problems such as toxicity to the organisms living in the soil or water bodies, and could also decrease the concentration of the dissolved oxygen.
A method for ammonia recovery from contaminated water including an effluent solution comprising ammonia (NH4OH), magnesium carbonate, and high salinity brine, and aqueous solutions, wherein the method comprises a first process comprising the steps of:
The method of any of the preceding claims, wherein the concentration of ammonium chloride in the effluent solution is in the range of about 12,000 to about 20,000 mg N/L.
The method of any of the preceding claims, wherein the concentration of ammonium chloride in the effluent is decreased to less than 10% by weight.
The method of any of the preceding claims, wherein ammonia can be recovered from water solution containing ammonium hydroxide with recovery efficiency of more than 77%.
Dependencies are inferred from the claim text.