Investigation and modeling of wastewater treatment, electricity generation and coulombic efficiency by new design nested cylindrical dual chamber microbial fuel cell

Abstract

Microbial fuel cells (MFCs) have attracted significant attention in recent years due to their potential in the biological treatment of waste and wastewater, as well as in energy conversion technologies. In this study, a reactor was designed using polypropylene material. The design positioned the cathode chamber inside the anode chamber to reduce diffusion resistance by minimizing the distance between the two chambers. Additionally, composite anode/cathode electrodes were developed using PTFE (polytetrafluoroethylene). As a result of the study, values for maximum voltage, maximum power density, and COD (chemical oxygen demand) removal efficiency were determined. The coulombic efficiency was also calculated and found to be 11.49%. pH and temperature values were monitored and these parameters remained within a consistent range throughout the study. The findings showed that this reactor design achieved comparable electricity generation potential and effective COD removal efficiency. Finally, voltage and COD removal values were used in Dizayn Expert 7.0.0 (Stat-Ease Inc., Minneapolis, MN, USA) for full factorial experimental modeling to validate the experimental results. Overall, the study is expected to contribute significantly to the literature on reactor designs in microbial fuel cell research.

Keywords

• Microbial fuel cell
• Reactor design
• Electrode design
• Design expert

Kaynakça

1. [1] Obileke K, Onyeaka H, Meyer EL, Nwokolo N. Microbial fuel cells, a renewable energy technology for bio-electricity generation: A mini-review. Electrochemistry Communications 2021; 125: 107003.
2. [2] Agrahari, R, Bayar B, Abubackar HN, Giri BS, Rene ER, Rani R. Advances in the development of electrode materials for improving the reactor kinetics in microbial fuel cells. Chemosphere 2022; 290: 133184.
3. [3] Shrivastav A, Sharma RK. Lignocellulosic biomass based microbial fuel cells: Performance and applications. Journal of Cleaner Production 2022; 361: 132269.
4. [4] Boas JV, Oliveira VB, Simões M, Pinto AM. Review on microbial fuel cells applications, developments and costs. Journal of Environmental Management 2022; 307: 114525.
5. [5] Munoz-Cupa C, Hu Y, Xu C, Bassi A. An overview of microbial fuel cell usage in wastewater treatment, resource recovery and energy production. Science of the Total Environment 2021; 754: 142429.
6. [6] Gul H, Raza W, Lee J, Azam M, Ashraf , Kim KH. Progress in microbial fuel cell technology for wastewater treatment and energy harvesting. Chemosphere 2021; 281: 130828.
7. [7] Janicek A, Fan Y, Liu H. Design of microbial fuel cells for practical application: A review and analysis of scale-up studies. Biofuels 2014; 5(1): 79-92.
8. [8] Bijimol BI, Basheer R, Sreelekshmy BR, Geethanjali CV, Shibli SMA. Sustained energy generation from unusable waste steel through microbial assisted fuel cell systems. Journal of Environmental Management 2024; 372: 123330.

9. [9] Chen W, Liu Z, Li Y, Xing X, Liao Q, Zhu X. Improved electricity generation, coulombic efficiency and microbial community structure of microbial fuel cells using sodium citrate as an effective additive. Journal of Power Sources 2021; 482: 228947.
10. [10] Zhang L, Wang J, Fu G, Zhang Z. Simultaneous electricity generation and nitrogen and carbon removal in single-chamber microbial fuel cell for high-salinity wastewater treatment. Journal of Cleaner Production 2020; 276: 123203.
11. [11] Patil SA, Harnisch F, Koch C, Hübschmann T, Fetzer I, Carmona-Martínez AA, Müller S, Schröder U. Electroactive mixed culture derived biofilms in microbial bioelectrochemical systems: the role of pH on biofilm formation, performance and composition. Bioresource Technology 2011; 102(20): 9683-9690.
12. [12] Sahoo P, Barman TK. ANN modelling of fractal dimension in machining. In Mechatronics and Manufacturing Engineering. Woodhead Publishing, UK, 2012.
13. [13] Wang J, Song X, Wang Y, Bai J, Bai H, Yan D, Cao Y, Li Y, Yu Z, Dong G. Bioelectricity generation, contaminant removal and bacterial community distribution as affected by substrate material size and aquatic macrophyte in constructed wetland-microbial fuel cell. Bioresource Technology 2017; 245: 372-378.
14. [14] Suransh J, Jadhav DA, Nguyen DD, Mungray AK. Scalable architecture of low-cost household microbial fuel cell for domestic wastewater treatment and simultaneous energy recovery. Science of The Total Environment 2023; 857(3): 159671.
15. [15] Chaijak P, Sola P. The new report of domestic wastewater treatment and bioelectricity generation using Dieffenbachia seguine constructed wetland coupling microbial fuel cell (CW-MFC). Archives of Environmental Protection 2023; 49(1): 57-62.
16. [16] Biswas A, Chakraborty S. Organics and coliform removal from low strength domestic wastewater using integrated constructed wetland–microbial fuel cell reactor with bioelectricity generation. Journal of Cleaner Production 2023; 408: 137204.