Study on the Conversion of Ammonia by Electrochemical Oxidation

Fang Yuan; Jin Guo Dai; Zhi Hui Liang; Hong Bo Fan; Si Hao Lv

doi:10.4028/www.scientific.net/AMR.807-809.1355

Paper Titles

Adsorption Performance of a Novel Complex Absorbent to Phosphorus in Aqueous Solution
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Adsorption Performance Study of Atrazine onto Activated Carbon Fiber
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Investigation of Iodine Distribution in the Semi-Hydrate Wet Phosphoric Acid Process
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Study on Degradation of Herbicide Atrazine by Electrochemical Oxidation Using Platinum Electrode
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Study on the Conversion of Ammonia by Electrochemical Oxidation
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Electrochemical Degradation of Methylene Blue Aqueous Solution on Electrospinning Nanofibers (ESF) Electrodes
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Design Engineering to Control Geological Environmental Problems of Limestone Mine in Fengshan, Guangxi
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An Underground Pollution of Water Purification Processing Equipment Develop
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Design on Manipulator Hand Structure Working in the Radiation Environment
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Study on the Conversion of Ammonia by Electrochemical Oxidation

Abstract:

The removal of high concentration ammonia in wastewater was investigated by an indirect electrochemical oxidation method using titanium electrodes coated with ruthenium and iridium (RuO2-IrO2-TiO2/Ti). The effect of different initial pH on ammonia removal by electrochemical oxidation was studied. The concentrations variation of ammonia, total nitrogen, nitrate nitrite, and free cholorines, chloramines was analyzed under the conditions with and without pH controlling. The results indicate that ammonia removal efficiency was higher under the moderate alkaline condition than that under neutral one. During the electrolysis process, nitrate and nitrite concentrations were very low, even below their detecting limits. The concentrations of free chlorines and chloramines were significantly affected by pH, as trichloramine and free chlorines were mainly produced in the reaction without pH controlling, while monochloramine was mainly produced in a stable alkalescene.