Aqueous Phosphate Removal and Electricity Production Using an Iron–Air Fuel Cell
Publication: Journal of Environmental Engineering
Volume 146, Issue 6
Abstract
Phosphorus (P) surplus is a key factor in water eutrophication, and aqueous phosphate removal is a concern. In this study, ferrous ions () were generated in situ by iron–air fuel cells and were used in the removal of P from synthetic P-containing wastewater. The P removal results indicated that different initial concentrations of P were more effectively removed by an in situ generation than by the addition of . The main P removal products of were Fe hydroxides, whereas the main products with the iron fuel cell were vivianite and Fe hydroxides. These results suggested that formed in situ had a more conducive and stronger affinity to bond phosphate than . The maximum power density reached after 24 h of operation. The results indicate that the iron–air fuel cell can be used for P removal/recovery coupled with potential electricity generation.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA23050203) and the National Natural Science Foundation of China (Grant No. 41373100). Additional support was provided by the Key Project of Research and Development Plan of Yantai, Shandong Province (Grant No. 2018ZHGY083).
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Published In
Journal of Environmental Engineering
Volume 146 • Issue 6 • June 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Oct 11, 2019
Accepted: Jan 2, 2020
Published online: Apr 8, 2020
Published in print: Jun 1, 2020
Discussion open until: Sep 8, 2020
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