Study on the Synergistic Mechanism of Simultaneous Wastewater Degradation and Power Generation in Modified Biochar-Based Microbial Fuel Cells
DOI: https://doi.org/10.62517/jiem.202503411
Author(s)
Zeng Yiwen
Affiliation(s)
Beijing Jiaotong University, Weihai Campus Weihai, Shandong, China
Abstract
Conventional wastewater treatment suffers from high energy consumption and significant carbon emissions. Microbial fuel cells (MFCs) coupled with biochar electrodes can simultaneously remove pollutants and generate electricity. This paper summarizes research progress on biochar in MFCs. Addressing limitations such as poor conductivity and insufficient active sites, it proposes strategies including physical modification, chemical modification, biological modification, and composite modification to enhance power density and pollutant removal efficiency. Finally, it discusses challenges for large-scale implementation and explores potential technical pathways for low-carbon wastewater treatment.
Keywords
Microbial Fuel Cell; Biochar; Wastewater Treatment; Electrode Modification
References
[1] Sangrulkar, P., Gupta, S., & Kandasubramanian, B. (2023). Advancements in biochar-based electrodes for improved performance of microbial fuel cells. Bioresource Technology Reports, 24, 101684. https://doi.org/10.1016/j.biteb.2023.101684
[2] Mishra, R., Gollakota, A. R. K., & Shu, C.-M. (2024). Cultivating eco-advantages: Unleashing the distinctive potential of biochar in microbial fuel cells. Process Safety and Environmental Protection, 185, 614–631. https://doi.org/10.1016/j.psep.2024.02.084
[3] Wang, G. L. (2024). Research progress on the application of biochar in wastewater denitrification and phosphorus removal. Petrochemical Technology, 31(11), 16–18.
[4] Gao Jiayao, Zhang Yuxiao, Wang Mengmeng, et al. (2025). Research progress on the application of biochar in microbial electrochemical technology. Chemical Engineering Progress, 1–15. https://doi.org/10.16085/j.issn.1000-6613.2025-0192
[5] Jing, X., Chen, Y., Wang, L., & Li, S. (2025). Preparation of polypyrrole/titanium nitride composite modified biochar and its application research in microbial fuel cells. RSC Advances, 15(8), 689–699. https://doi.org/10.1039/d4ra08808e
[6] Das, S., Raj, R., & Ghangrekar, M. M. (2025). Application of a novel photosynthetic microbial fuel cell employing carbonized bamboo monolith as cathode coated with agro-waste biochar to improve overall performance efficacy. Journal of Environmental Management, 385, 125691. https://doi.org/10.1016/j.jenvman.2025.125691
[7] Li, S., Chen, Y., Wang, L., & Zhang, Q. (2021). Sustainable biochar as an electrocatalysts for the oxygen reduction reaction in microbial fuel cells. Green Energy & Environment, 6(5), 644–659. https://doi.org/10.1016/j.gee.2020.11.010
[8] He, D. D., Zhang, Z. Y., Liu, J. L., et al. (2024). Application of municipal sludge biochar in wastewater adsorption treatment. Fine Chemicals, 41(07), 1447–1457.
[9] Jiang Yuchen, Li Qingyang, Hu Xun. (2023). Research Progress on Biochar Preparation Based on Microwave Pyrolysis Technology. Integrated Smart Energy, 45(05), 46–62.
[10] Tian Yu, Wang Haiman, Wang Guiqiang. (2025). Study on the Preparation of Nitrogen-Doped Eggplant-Based Biochar for Microbial Fuel Cell Anodes. Industrial Water Treatment, 1–14. https://doi.org/10.19965/j.cnki.iwt.2024-0799
[11] Xu, D. F., Wu, B. D., Yang, J. J., et al. (2023). Algal carbon-modified electrodes enhance electricity generation and nitrobenzene removal in microbial fuel cells. Journal of Environmental Engineering Technology, 13(06), 2092–2104.
[12] Zhang, Y. S., Pang, Y. J., Xu, J., et al. (2025). Application and Research Progress of Microwave Pyrolysis Technology in Biochar Preparation. Materials Reports, 39(11), 275–281.
[13] Ramya, M., Harsha Vardhan, K., & Senthil Kumar, P. (2022). Metal mixed biochar electrodes for the generation of electricity with high power density in microbial fuel cell. Sustainable Energy Technologies and Assessments, 53, 102549. https://doi.org/10.1016/j.seta.2022.102549
[14] Zhao, S., Li, J., Wang, Y., Zhang, L., & Chen, M. (2023). Application of biochar in microbial fuel cells: Characteristic performances, electron-transfer mechanism, and environmental and economic assessments. Ecotoxicology and Environmental Safety, 267, 115643. https://doi.org/10.1016/j.ecoenv.2023.115643
[15] Deivayanai, V. C., Pugazhendhi, A., Kumar, P. S., & Rangasamy, G. (2024). A sustainable approach on utilization of waste-derived biochar in microbial fuel cell toward net-zero coalition. *Nano-Structures & Nano-Objects, 39*, 101307. https://doi.org/10.1016/j.nanoso.2024.101307
[16] Priyadarshini, M., Ahmad, A., Singh, L., & Rao, P. V. (2024). Anodic degradation of salicylic acid and simultaneous bio-electricity recovery in microbial fuel cell using waste-banana-peels derived biochar-supported MIL-53(Fe)-metal-organic framework as cathode catalyst. Journal of Electroanalytical Chemistry, 967, 118451. https://doi.org/10.1016/j.jelechem.2024.118451
[17] Jadhav, G. S., Ray, S. G., Ghosh, S., & Das, S. (2025). Metal-doped (Fe-Mn) heteroatom-rich porous biochar-based poison-resilient cathode catalyst for enhanced performance of microbial fuel cell. Sustainable Energy Technologies and Assessments, 75, 104208. https://doi.org/10.1016/j.seta.2025.104208
[18] Dhanda, A., Singh, R., Kumar, A., & Singh, P. (2023). Graphene and biochar-based cathode catalysts for microbial fuel cell: Performance evaluation, economic comparison, environmental and future perspectives. Environmental Research, 231(Pt 2), 116143. https://doi.org/10.1016/j.envres.2023.116143
[19] Zhang, W., Liu, J., Chen, H., Wang, X., & Yang, L. (2025). Enhancing electricity generation and pollutant degradation in microbial fuel cells using cyanobacteria-derived biochar electrodes. Bioresource Technology, 418, 132000. https://doi.org/10.1016/j.biortech.2024.132000
[20] Wang, Z.-J., Liu, J., Zhang, Y., & Li, H. (2025). Hotspots evolution, current challenges and future directions of microbial fuel cell: By bibliometric analysis and network meta-analysis. International Journal of Hydrogen Energy, 109, 945–960. https://doi.org/10.1016/j.ijhydene.2025.02.166
[21] Lü Zhiwei, Luo Chunhong, Li Dongmei, et al. (2024). Effect of Pyrolysis Temperature on Physical and Chemical Adsorption Capacities of Biochar. Chinese Agricultural Science Bulletin, 40(32), 68–76.
[22] Chen, C. J., Zhang, M. C., Chen, X., et al. (2022). Power generation performance of walnut shell biochar electrodes in microbial fuel cells and their pollutant removal capabilities. Journal of Environmental Engineering, 16(10), 3281–3290.
[23] Ren Zhijun, Yin Haoda, Wang Qiwen, et al. (2025). Research Progress on Chemically Modified Biochar and Its Application in Water Treatment. Industrial Water Treatment, 45(06), 98–106. https://doi.org/10.19965/j.cnki.iwt.2024-0633
[24] Chen, Q. K., Li, J. Y., Fan, J. P., et al. (2022). Effect of Pyrolysis Temperature on Cu(Ⅱ) Adsorption and Carbon Fixation by Mountain City Sludge Biochar. Journal of Applied Chemistry, 51(12), 3469–3474. https://doi.org/10.16581/j.cnki.issn1671-3206.20221103.008
[25] Lü Zhiwei, Luo Chunhong, Li Dongmei, et al. (2024). Effect of Pyrolysis Temperature on Physical and Chemical Adsorption Capacities of Biochar. Chinese Agricultural Science Bulletin, 40(32), 68–76.
[26] Yan, J., Wang, H., Li, Y., Zhang, Q., & Sun, Y. (2024). Multi-walled carbon nanotubes modified corn straw biochar as high-performance anode in microbial fuel cells. Journal of Environmental Chemical Engineering, 12(5), 113316. https://doi.org/10.1016/j.jece.2024.113316
[27] Javanmard, A., Asgari Lajayer, B., Price, G. W., & Astatkie, T. (2024). Revolutionizing microbial fuel cells: Biochar’s energy conversion odyssey. Process Safety and Environmental Protection, 187, 26–58. https://doi.org/10.1016/j.psep.2024.04.066
[28] Li, C., Wang, Y., Zhang, L., & Liu, J. (2023). Enhancing simultaneous electrosynthesis of CO2 and nitrogen removal in microbial fuel cell (MFC) cathode compartment by adding Fe–C/biochar compound substrates. Journal of Power Sources, 560, 232707. https://doi.org/10.1016/j.jpowsour.2023.232707