| 适用于高氯氨氮废水电催化处理的Ru-Ir电极合成表征及性能评价 |
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| 引用本文： | 杨振兴,谢文玉,李德豪,阎光绪,郭绍辉.适用于高氯氨氮废水电催化处理的Ru-Ir电极合成表征及性能评价[J].环境工程,2022,40(7):165-171. |
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| 作者姓名： | 杨振兴 谢文玉 李德豪 阎光绪 郭绍辉 |
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| 作者单位： | 1. 中国石油大学(北京) 油气污染防治北京市重点实验室, 北京 102249; |
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| 基金项目： | 中国石油大学(北京)科学基金(2462020XKJS04) |
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| 摘 要： | 研究了钌铱摩尔比对钌铱电极微观结构、化学性质、电化学性能和脱氮性能的影响。采用电化学方法测试了电极的电化学性能。结果表明:Ru-Ir固溶体为金红石晶体,晶粒分布均匀,连接紧密。随着Ir摩尔比的增加,Ru-Ir电极的电化学性能先升高后降低。当n(Ru):n(Ir)为2:1时,Ru2/3Ir1/3O2电极的电化学性能最佳。Ru2/3Ir1/3O2电极的析氯电位、腐蚀电流密度和电导率分别是RuO2电极的0.998,0.755,1.816倍。在处理高氯氨氮模拟废水时,利用合成电极氧化脱除氨氮的结果表明,Ru2/3Ir1/3O2电极的处理效果最好,当电流为0.5 A时,50 min内氨氮脱除率可达到75.2%,证明了电催化技术能有效处理高氯氨氮废水。
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| 关 键 词： | 高氯氨氮废水 Ru-Ir摩尔比 Ru2/3Ir1/3O2电极 电催化技术 |
| 收稿时间： | 2021-08-31 |
SYNTHESIS,CHARACTERIZATION AND PERFORMANCE EVALUATION OF Ru-Ir ELECTRODE FOR ELECTROCATALYTIC TREATMENT FOR AMMONIA-NITROGEN WASTEWATER WITH HIGH CHLORIDE CONTENT |
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| Affiliation: | 1. Beijing Key Laboratory of Oil and Gas Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China;2. Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Guangdong University of Petrochemical Technology, Maoming 525000, China |
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| Abstract: | In this paper,the effect of the molar ratios of ruthenium (Ru)-iridium (Ir) on the microstructure,chemical properties,electrochemical performance,and denitrification performance of high ammonia-chloride wastewater were investigated.The results illustrated that Ru-Ir solid solution was a rutile crystal with uniform grain distribution and tight connection.The electrochemical performances of the electrodes were tested by electrochemical techniques.And the electrochemical performance of the Ru-Ir electrode first increased and then decreased with the increase of the molar ratio of Ir.The electrochemical properties of Ru2/3Ir1/3O2 electrodes were the best when the molar ratio of Ru-Ir was 2:1.The chlorine evolution potential,corrosion current density,and conductivity of Ru2/3Ir1/3O2 electrode were 0.998,0.755,and 1.816 times those of RuO2,respectively.In the removal process of ammonia-nitrogen in high chloride ammonia-nitrogen simulated wastewater,the electrode with the best removal effect of ammonia-nitrogen was Ru2/3Ir1/3O2 electrode,and when the current was 0.5 A,the ammonia-nitrogen removal rate could reach 75.2% in 50 minutes.This paper proved that electrocatalytic technology could effectively treat high chloride ammonia-nitrogen wastewater. |
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