摘要
农业集约化导致氮肥施用量呈直线上升趋势,由此引发了农田地下水硝酸盐污染问题,电催化还原工艺作为电化学污水处理技术中最为简单有效的还原方法,对农田地下水中的硝酸盐类污染物具有良好的去除效果。但受体系效能限制,电催化还原工艺处理农田地下水硝酸盐污染仍存在能耗偏高、还原机理解析不明晰等问题。本文简要论述了异质结阴极用于电催化还原体系处理水中硝酸盐类污染物的研究进展,分析了异质结阴极的制备方法及其在电催化还原过程中所起的作用。同时,重点介绍了近年来的研究成果、结构特点、性能,对异质结阴极的作用进行了评价与总结,为农田地下水硝酸盐污染的电化学深度处理提供参考。
Agricultural intensification leads to a linear increase in the application of nitrogen fertilizer,which causes the problem of nitrate pollution in farmland groundwater.Electrocatalytic reduction process,as the simplest and most effective reduction method in electrochemical wastewater treatment technology,has a good removal effect on nitrate pollutants in farmland groundwater.However,due to the limitation of system efficiency,the electrocatalytic reduction process still has some problems,such as high energy consumption and unclear reduction mechanism.In this paper,the research progress of heterojunction cathodes used in electrocatalytic reduction system to treat nitrate pollutants in water is briefly reviewed.The preparation methods of heterojunction cathodes and their roles in the electrocatalytic reduction process are analyzed.At the same time,the research results in recent years,structural characteristics,properties,and the role of heterojunction cathode were evaluated and summarized,which provided a reference for the electrochemical treatment of nitrate pollution in farmland groundwater.
作者
王文凯
Wang Wenkai(Shandong Urban and Rural Planning Design Institute,Jinan 250001,China)
出处
《山东化工》
CAS
2024年第11期106-107,110,共3页
Shandong Chemical Industry
关键词
电催化还原
农田地下水
硝酸盐
异质结阴极
electrocatalytic reduction
farmland groundwater
nitrate
heterojunction cathode
