工业水处理 ›› 2024, Vol. 44 ›› Issue (1): 60-72. doi: 10.19965/j.cnki.iwt.2022-1075

• 专论与综述 • 上一篇    下一篇

电催化还原废水中硝酸盐制氨的研究进展

赵慧1(), 王富东2, 钱光磊1, 雷太平1, 任春燕1, 谢陈鑫1()   

  1. 1. 中海油天津化工研究设计院有限公司,天津 300131
    2. 广东石化有限责任公司,广东 揭阳 515200
  • 收稿日期:2022-12-23 出版日期:2024-01-20 发布日期:2024-01-24
  • 作者简介:

    赵慧(1982— ),硕士研究生,高级工程师。电话:022-26689183,E-mail:

    谢陈鑫,硕士研究生,高级工程师。电话:022-26689132,E-mail:

Research progress of electrocatalytic reduction of nitrate in wastewater to ammonia

Hui ZHAO1(), Fudong WANG2, Guanglei QIAN1, Taiping LEI1, Chunyan REN1, Chenxin XIE1()   

  1. 1. CenerTech Chemical Research and Design Institute Co. , Ltd. , Tianjin 300131, China
    2. Guangdong Petrochemical Co. , Ltd. , Jieyang 515200, China
  • Received:2022-12-23 Online:2024-01-20 Published:2024-01-24

摘要:

硝酸盐作为地表和地下水中常见的污染物,对环境造成严重污染,电催化还原硝酸盐制氨可促进水体中的氮循环。综述了用于硝酸盐还原制氨的过渡金属、贵金属及非金属催化剂的研究进展,对该领域的大量实例进行了收集,分析了电极材料具有高效率的原因,综述了电催化还原硝酸盐制氨的反应机理、电极制备方式、操作条件、硝酸盐去除率及选择性;对电极电势、硝酸盐浓度、pH、电流密度、支持电解质等影响因素进行了分析,比较了电催化还原硝酸盐制氨的反应器形式及生产出产品氨的生产工艺,并对实例中的生产能耗进行了对比;最后,对该领域的挑战和前景进行了展望。

关键词: 电催化还原, 硝酸盐, 废水处理

Abstract:

As a common pollutant in surface and groundwater,nitrate causes serious pollution to the environment. Electrocatalytic reduction of nitrate to ammonia promotes nitrogen cycle in water. The research progress of transition metal,noble metal and non-metal catalysts for nitrate reduction to ammonia was reviewed. A large number of cases in this field were collected,and the reasons for the high efficiency of electrode materials were analyzed. The reaction mechanism,electrode preparation method,operating conditions,nitrate removal rate and selectivity of electrocatalytic reduction of nitrate to ammonia were reviewed. The influencing factors such as electrode potential,nitrate concentration,pH,current density and supporting electrolyte were analyzed. The reactor form of electrocatalytic reduction of nitrate to ammonia and the production process of product ammonia were compared. The production energy consumption in the example was compared. Finally,the challenges and prospects in this field were discussed.

Key words: electrocatalytic reduction, nitrate, wastewater treatment

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