Abstract
The research on constructed wetland (CW) and microbial fuel cell (MFC) has been separate studies worldwide with crucial achievements being made in both fields. Due to environmentally friendly feature (of CW) and rich microbial population and excellent electrode catalytic activity (of MFC), CW and MFC have their own anticipated application prospect in wastewater purification and biological electricity generation. More significantly, the idea of embedding MFC into CW to form CW-MFC expands the scope for both of them and this has received much interest in recent years due to its striking features of sewage treatment efficiency, electricity generation, sustainability, and environmental friendliness. The increasing interest and the lack of soul of CW-MFC emerging to the new researchers reflect the need to recall the idea and summarize its development with regard to achieving its reality via some key issues This forms the basis of the paper. The paper also includes how to enhance the efficiency of electricity generation and supplement energy consumption, the degradation of emerging pollutants, and the degradation mechanism as well as the potential joint application of CW-MFC with other treatment technique. A mass of CW-MFC design parameters has been synthesized from the literature. Challenges and potential directions of CW-MFC in the future are prospected. It is expected that the paper can serve as a linkage for bridging knowledge gaps for further studies of CW-MFC.
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This study was supported by National Natural Science Foundation of China (project No. 42377086).
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All authors contributed to the study. Material preparation, literature survey, data collection and analysis as well as the first draft of the manuscript were performed by Diaodiao Li and all authors commented on previous versions of the manuscript. Yaqian Zhao supervised the study and made considerable correction on the manuscript and finalized the manuscript. All authors read and approved the final manuscript.
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Li, D., Zhao, Y., Wei, D. et al. Key issues to consider toward an efficient constructed wetland-microbial fuel cell: the idea and the reality. Environ Sci Pollut Res 31, 11559–11575 (2024). https://doi.org/10.1007/s11356-024-31984-0
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DOI: https://doi.org/10.1007/s11356-024-31984-0