TY - JOUR
T1 - Microbial electrochemical technologies assisted nitrogen recovery from different wastewater sources
T2 - Performance, life cycle assessment, and challenges
AU - Zhai, Siyuan
AU - Zhang, Dexin
AU - Liu, Wenzong
AU - Wang, Bo
AU - Liang, Bin
AU - Liu, Chengyan
AU - Zeng, Ran
AU - Hou, Yanan
AU - Cheng, Hao Yi
AU - Wang, Aijie
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/7
Y1 - 2023/7
N2 - A large amount of chemical energy in wastewater is highly valuable in resource utilization, and nitrogen is one of the key nutrients and contaminants in diverse wastewater. Traditional wastewater treatment technologies focus on removing nitrogen from wastewater, which s not sustainable and consumes a lot of resources and energy. Microbial electrochemical technologies (METs) have been invested to transform conventional energy-intensive wastewater treatment into a resource recovery process for reclaiming valuable nitrogen products. Nevertheless, the engineering application of METs from different real wastewater is still in its infancy due to the complex characteristics of different waste streams. This review broadly concludes the present METs-assisted nitrogen recovery systems and the ammonium recovery performance of different wastewater streams. Additionally, the environmental impact and economic analysis of different METs and end products are presented to demonstrate their application potential. The results show that the microbial electrolysis cell (MEC) has better engineering application compared to microbial fuel cell (MFC), which could reduce the overall environmental burden and infrastructure costs. And coupling the MEC with stripping technology can be a preferable option for ammonia recovery. Finally, present challenges and prospects in the field of METs-assisted nitrogen recovery are discussed, including scaling up bioreactors, enhancing strategies, and conducting life cycle assessment of the entire recovery process.
AB - A large amount of chemical energy in wastewater is highly valuable in resource utilization, and nitrogen is one of the key nutrients and contaminants in diverse wastewater. Traditional wastewater treatment technologies focus on removing nitrogen from wastewater, which s not sustainable and consumes a lot of resources and energy. Microbial electrochemical technologies (METs) have been invested to transform conventional energy-intensive wastewater treatment into a resource recovery process for reclaiming valuable nitrogen products. Nevertheless, the engineering application of METs from different real wastewater is still in its infancy due to the complex characteristics of different waste streams. This review broadly concludes the present METs-assisted nitrogen recovery systems and the ammonium recovery performance of different wastewater streams. Additionally, the environmental impact and economic analysis of different METs and end products are presented to demonstrate their application potential. The results show that the microbial electrolysis cell (MEC) has better engineering application compared to microbial fuel cell (MFC), which could reduce the overall environmental burden and infrastructure costs. And coupling the MEC with stripping technology can be a preferable option for ammonia recovery. Finally, present challenges and prospects in the field of METs-assisted nitrogen recovery are discussed, including scaling up bioreactors, enhancing strategies, and conducting life cycle assessment of the entire recovery process.
KW - Life cycle assessment
KW - Microbial electrochemical technology
KW - Nitrogen recovery
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=85153084770&partnerID=8YFLogxK
U2 - 10.1016/j.resconrec.2023.107000
DO - 10.1016/j.resconrec.2023.107000
M3 - Review
AN - SCOPUS:85153084770
SN - 0921-3449
VL - 194
JO - Resources, Conservation & Recycling
JF - Resources, Conservation & Recycling
M1 - 107000
ER -