Progress in selective electrochemical reduction of nitrate into ammonia
Journal Title: Energy Environmental Protection - Year 2023, Vol 37, Issue 4
Abstract
Selective electrochemical reduction of nitrate (NO3-) into ammonia (NH_3) is critical for environmental remediation and resource recovery. This review comprehensively summarizes the recent advances in electrochemical conversion of NO3- into NH_3. Mechanisms of NO3- reduction are discussed. The conversion of NO3- into NO_2 and formation of N—H is the key for achieving high selectivity of NH3. The technologies and strategies for enhancing the performance of electrode are summarized and compared. The crystal structure, morphology and charge density of materials are the key factors affecting the properties of electrode materials. The influence of electrochemical reactor on NO3- conversion and NH_3 formation is described. The core of electrolytic cell is to avoid anode interference and in-situ realize NH_3 separation and recovery. With these facts, it is proposed that the strategies for NO3- electrochemical selective reduction synthesis of NH_3 are the development of low-cost, stable, and efficient electrode materials and electrochemical synthesis and in-situ separation of NH_3 reactor. Besides, the long-term large-scale research on the electrochemical synthesis of NH_3 from actual NO3- wastewater is critical for promoting the industrialization of this technology.
Authors and Affiliations
LI Zhizhuo|School of Metallurgy and Environment, Central South University, China, YAO Fubing|School of Metallurgy and Environment, Central South University, China, WU Xing|School of Metallurgy and Environment, Central South University, China, GAO Tianyu|School of Metallurgy and Environment, Central South University, China, SONG Zhenhui|School of Metallurgy and Environment, Central South University, China, CHAI Xilin|Jiangxi Gaiya Environmental Protection Technology Company, China, TANG Chongjian*|School of Metallurgy and Environment, Central South University, China,
Keywords
Related Articles
- EP ID EP737975
- DOI 10.20078/j.eep.20230601
- Views 28
- Downloads 0
Denitrification research based on green electron supply and cell metabolism regulation
As a key link in the nitrogen cycle, microbial denitrification plays an important role in removing nitrate pollution from the water environment, realizing the return of nitrogen to the atmosphere, and maintaining nitroge...
Advances in selective catalytic oxidation materials for nitrogen-containing volatile organic compounds
Volatile organic compounds (VOCs) and nitrogen oxides (NO_x), recognized as pivotal precursors to PM_2.5 and O_3, necessitate the implementation of immediate and stringent reduction and control strategies. Nitrogen-conta...
Research progress of palladium-based catalysts for oxidation of low concentration methane
Methane (CH_4) is an important greenhouse gas that is 25 times that its CO_2 equivalent. There is low concentration (0.05% ~0.5%) CH_4 leakage in marine natural gas engine exhaust. It is difficult to capture and utilize...
Review on remote OBD system data analysis of heavy-duty diesel vehicle
Heavy-duty diesel vehicle is an important source of nitrogen oxides and particulates in the atmosphere. The remote OBD system combines OBD technology with wireless communication technology to send the vehicle operation d...
Numerical simulation analysis of activated carbon injection adsorption in flue gas purification application
Sludge blending has become one of the means to transform the energy structure of coal-fired power plants. Based on the existing coal-fired flue gas system of Zhejiang Jinhua Ningneng Thermal Power Plant, this paper propo...