Enhanced Electricity Generation and Heavy Metal Removal by a Rutile–Biochar Cathode MFC
Abstract
:1. Introduction
2. Materials and Methods
2.1. Chemical Reagents for the Experiment
2.2. Preparation of Biochar and Rut-B
2.3. Characterization of Composite Materials
2.4. Construction of MFC
2.5. Determination of Pollutant Degradation Performance
3. Results and Discussion
3.1. Characterization of Biochar, Rutile, and Rut-B
3.2. System Efficiency and Potential Characteristics of MFCs
3.3. Study on the Degradation of Heavy Metal Pollutants by MFCs
3.4. Study on the Cyclic Degradation Performance of MFCs
3.5. Mechanism of Rut-B Cathode Catalysis
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Systems | Open-Circuit Voltage (mV) | Maximum Power Density (mW/m2) | Limiting Current Density (mA/m2) |
---|---|---|---|
Rut-B | 315.27 | 9.88 | 152.26 |
Rutile | 236.91 | 7.21 | 115.67 |
Biochar | 188.43 | 5.76 | 95.41 |
Blank | 149.26 | 3.05 | 75.11 |
Systems | Fitting Equation | Reaction Rate Constant (K/d−1) | R2 |
---|---|---|---|
Rut-B | y = 0.04705 + 0.3386x | 0.3386 | 0.9921 |
Rutile | y = 0.00871 + 0.1379x | 0.1379 | 0.9947 |
Biochar | y = 0.02587 + 0.0461x | 0.0461 | 0.9826 |
Blank | y = −0.00678 + 0.0279x | 0.0279 | 0.9917 |
Systems | Fitting Equation | Reaction Rate Constant (K/d−1) | R2 |
---|---|---|---|
Rut-B | y = 0.00061 + 0.2438x | 0.2438 | 0.9967 |
Rutile | y = 0.03066 + 0.1088x | 0.1088 | 0.9874 |
Biochar | y = 0.01925 + 0.0455x | 0.0455 | 0.9934 |
Blank | y = −0.00369 + 0.0274x | 0.0274 | 0.9951 |
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Zhou, J.; Wang, L.; Wang, Z.; Feng, Y.; Luo, G.; Wang, Z.; Wu, J.; Hu, P. Enhanced Electricity Generation and Heavy Metal Removal by a Rutile–Biochar Cathode MFC. Minerals 2023, 13, 1250. https://doi.org/10.3390/min13101250
Zhou J, Wang L, Wang Z, Feng Y, Luo G, Wang Z, Wu J, Hu P. Enhanced Electricity Generation and Heavy Metal Removal by a Rutile–Biochar Cathode MFC. Minerals. 2023; 13(10):1250. https://doi.org/10.3390/min13101250
Chicago/Turabian StyleZhou, Jiqiang, Lei Wang, Zhe Wang, Yonglin Feng, Guangfeng Luo, Zhiyang Wang, Jing Wu, and Peiqing Hu. 2023. "Enhanced Electricity Generation and Heavy Metal Removal by a Rutile–Biochar Cathode MFC" Minerals 13, no. 10: 1250. https://doi.org/10.3390/min13101250