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首页> 外文期刊>Journal of Applied Electrochemistry >Electrochemical treatment of ammonia in wastewater by RuO2–IrO2–TiO2/Ti electrodes
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Electrochemical treatment of ammonia in wastewater by RuO2–IrO2–TiO2/Ti electrodes

机译：RuO2 –IrO2 –TiO2 / Ti电极电化学处理废水中的氨

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摘要

This study investigated the removal of ammonia in wastewater by an electrochemical method using titanium electrodes coated with ruthenium and iridium (RuO2–IrO2–TiO2/Ti) with low chlorine evolution over-voltage. The effects of operating parameters, including chloride ion concentration, current density and initial pH, were also investigated. The results were evaluated primarily by considering the efficiency of the elimination of NH 4 + -N. The removal of ammonia by electrochemical oxidation mainly resulted from the indirect oxidation effect of chlorine/hypochlorite produced during electrolysis. The direct anodic oxidation efficiency of ammonia was less than 5%, and the current efficiency was less than 10%. The ammonia removal followed pseudo-first-order kinetics. The electrochemical process can be applied successfully as a final polishing step, or as an alternative method to biological nitrification. The process seems to be most beneficial for small coastal cities
机译：本研究使用低氯放出过电压的钌和铱（RuO2–IrO2 –TiO2 / Ti）钛电极电化学方法研究了废水中氨的去除。还研究了操作参数的影响，包括氯离子浓度，电流密度和初始pH。主要通过考虑消除NH 4 + -N的效率来评估结果。通过电化学氧化去除氨主要是由于电解过程中产生的氯/次氯酸盐的间接氧化作用。氨的直接阳极氧化效率小于5％，电流效率小于10％。氨的去除遵循拟一级动力学。电化学过程可以成功地用作最终抛光步骤，或作为生物硝化的替代方法。这个过程似乎对沿海小城市最有利

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