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

杨振兴; 谢文玉; 李德豪; 阎光绪; 郭绍辉

doi:DOI:10.13205/j.hjgc.202207024

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

doi: DOI:10.13205/j.hjgc.202207024

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;
2. 广东石油化工学院广东省石油化工污染过程与控制重点实验室, 广东茂名 525000

基金项目:

中国石油大学(北京)科学基金(2462020XKJS04)

详细信息

作者简介:
杨振兴(1988-),男,博士,主要研究方向为工业水污染防治与处理。yangzx_cup@163.com

通讯作者:
阎光绪(1962-),男,博士,教授,主要研究方向为"三废"治理与资源化、给排水系统优化、污染生态评价及修复。yangx@cup.edu.cn

计量
- 文章访问数: 142
- HTML全文浏览量: 14
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2021-08-31
- 网络出版日期: 2022-09-02

SYNTHESIS,CHARACTERIZATION AND PERFORMANCE EVALUATION OF Ru-Ir ELECTRODE FOR ELECTROCATALYTIC TREATMENT FOR AMMONIA-NITROGEN WASTEWATER WITH HIGH CHLORIDE CONTENT

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

摘要

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,Ru_2/3Ir_1/3O₂电极的电化学性能最佳。Ru_2/3Ir_1/3O₂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,Ru_2/3Ir_1/3O₂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。
- 高氯氨氮废水 /
- Ru-Ir摩尔比 /
- Ru_2/3Ir_1/3O₂电极 /
- 电催化技术
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 Ru_2/3Ir_1/3O₂ electrodes were the best when the molar ratio of Ru-Ir was 2:1.The chlorine evolution potential,corrosion current density,and conductivity of Ru_2/3Ir_1/3O₂ 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 Ru_2/3Ir_1/3O₂ 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.
- high chloride ammonia-nitrogen wastewater /
- the molar ratios of Ru-Ir /
- Ru_2/3Ir_1/3O₂ electrode /
- electrocatalytic technology

HTML全文

参考文献(15)

[1]	周银芳. SBR工艺处理高含盐采油废水试验研究[D].西安:长安大学, 2010.
[2]	RIBEIRO J, ALVES P D, DE Andrade A R. Effect of the preparation methodology on some physical and electrochemical properties of Ti/Ir_<i>xSn_(1-x)O₂ materials[J]. Journal of materials science, 2007,42(22):9293-9299.
[3]	ESCALANTE G I, DURON T S, CRUZ J, et al. Electrochemical characterization of IrO₂-Pt and RuO₂-Pt mixtures as bifunctional electrodes for unitized regenerative fuel cells[J]. Journal of New Matetials for Electrochemical Systems, 2010,13:227-233.
[4]	CRUZ J, HERNÁNDEZ A R, GUERRA B M, et al. Electrochemical evaluation of a Ir-Ru binary oxide for oxygen evolution reaction[J]. International Journal of Electrochemical Science, 2012,7(9):7866-7876.
[5]	CRUZ J, BAGLIO V, SIRACUSANO S, et al. Nanosized IrO₂ electrocatalysts for oxygen evolution reaction in an SPE electrolyzer[J]. Journal of Nanoparticle Research, 2011,13(4):1639-1646.
[6]	AUDICHON T, MAYOUSSE E, MORISSET S, et al. Electroactivity of RuO₂-IrO₂ mixed nanocatalysts toward the oxygen evolution reaction in a water electrolyzer supplied by a solar profile[J]. International Journal of Hydrogen Energy, 2014,39(30):16785-16796.
[7]	MENZEL N, ORTEL E, METTE K, et al. Dimensionally stable Ru/Ir/TiO₂-anodes with tailored mesoporosity for efficient electrochemical chlorine evolution[J]. ACS Catalysis, 2013,3(6):1324-1333.
[8]	SANTANA M H P, DE F L A. Oxygen and chlorine evolution on RuO₂+TiO₂+CeO₂+Nb₂O₅ mixed oxide electrodes[J]. Electrochimica Acta, 2006,51(17):3578-3585.
[9]	WANG S W, XU H L, YAO P D, et al. Ti/RuO₂-IrO₂-SnO₂-Sb₂O₅ anodes for Cl₂ evolution from seawater[J]. Electrochemistry, 2012,80(7):507-511.
[10]	RUAN Y, LU C, GUO X, et al. Electrochemical treatment of recirculating aquaculture wastewater using a Ti/RuO₂-IrO₂ anode for synergetic total ammonia nitrogen and nitrite removal and disinfection[J]. Transactions of the ASABE, 2016,59(6):1831-1840.
[11]	WANG H, YANG Y, LIU X, et al. Decomposition of ammonia nitrogen from biologically pretreated coking wastewater with electrochemical three-dimensional Ti/RuO₂/IrO₂ electrodes[J]. Nature Environment and Pollution Technology, 2016,15(3):881-886.
[12]	HE S L, HUANG Q, ZHANG Y, et al. Investigation on direct and indirect electrochemical oxidation of ammonia over Ru-Ir/TiO₂ anode[J]. Industrial&Engineering Chemistry Research, 2015,54(5):1447-1451.
[13]	WANG B, HOU S Z, HAN Y, et al. Recent status of development of metal oxide coated anode for antifouling by electrolyzing seawater[J]. Development&Application of Materials, 1998,13(1):42.
[14]	LI L, LIU Y. Ammonia removal in electrochemical oxidation:mechanism and pseudo-kinetics[J]. Journal of Hazardous Materials, 2009,161(2/3):1010-1016.
[15]	WANG J. Preparation of the ordered spherical Ru-RuO₂ and electrocatalysis toward chlorine evolution reaction[J]. International Journal of Electrochemical Science, 2019:10187-10197.