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Updated: Jun 4, 2025

Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
Valorization systems based on electrocatalytic nitrate/nitrite conversion for energy supply and valuable product
Yi Feng1, Jin-Tao Ren1, Ming-Lei Sun1
1School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Nankai University Tianjin 300350 China zyyuan@nankai.edu.cn.
Abstract:
The excessive accumulation of nitrate/nitrite (NO -) in surface and groundwater has severely disrupted the global nitrogen cycle and jeopardized public health. The electrochemical conversion of NO - to ammonia (NH3) not only holds promise for ecofriendly NO - removal, but also provides a green alternative to the energy-intensive Haber-Bosch process for NH3 production. Recently, in addition to the electrocatalyst design explosion in this field, many innovative valorization systems based on NO --to-NH3 conversion have been developed for generating energy and expanding the range of value-added products. Collective knowledge of advanced conversion systems is indispensable for restoring the global nitrogen cycle and promoting a N-based economy. Herein, a timely and comprehensive review is provided on the important progress of valorization systems based on NO - conversion, including waste treatment systems, novel electrolytic systems, and energy conversion and storage systems. Some mechanism explorations, device designs, key electrode developments and feasibility analyses are involved to gain deeper understanding of various systems and facilitate implementing these cleaning systems in industry. Finally, challenges and future prospects are outlined in the NO - conversion field with an aim to promote large-scale electrocatalytic system development and prosperous N-based electrochemistry.
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