Effects of electron donors and acceptors in generating bioelectrical energy using microbial fuel cells
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
BACKGROUND: In recent years, microbial fuel cells (MFCs) have emerged as a promising technology for recovering renewable energy from waste biomass,especially wastewater. In this study, the possibility of bioelectricity generation in two chambered mediator-less microbial fuel cells (MFCs) was successfully demonstrated using fermentable and non-fermentable substrates. METHODS AND RESULTS: Two different electron acceptors have been tested in the cathode chamber for the effects of reducing agent on the power generation in MFCs. The average voltages of 0.26±0.014 V and 0.36±0.02 V were achieved with acetate using oxygen and potassium ferricyanide as reducing agent, respectively. Similarly, with glucose the average voltages of 0.256±0.05V and 0.340±0.04 V were obtained using oxygen and ferricyanide, respectively. Using potassium ferricyanide as the reducing agent, the power output increases by 39 and 43% with acetate and glucose, respectively, as compared to the dissolved oxygen. Slightly higher coulombic efficiency (CE%) was obtained in acetate as compared to MFCs operated with glucose. The maximum power densities of 124 mW/m2 and 204mW/m2 were obtained using dissolved oxygen and K3Fe(CN)6, respectively. CONCLUSION(s): This study demonstrates that power generation from the MFCs can be influenced significantly by the different types of catholyte. Relatively higher CE was obtained with K3Fe(CN)6. Thus, application of K3Fe(CN)6 as the catholyte can be vital for scaling uppower generation from the MFCs forreal time applications.
Abstract
BACKGROUND: In recent years, microbial fuel cells (MFCs) have emerged as a promising technology for recovering renewable energy from waste biomass,especially wastewater. In this study, the possibility of bioelectricity generation in two chambered mediator-less microbial fuel cells (MFCs) was successfully demonstrated using fermentable and non-fermentable substrates. METHODS AND RESULTS: Two different electron acceptors have been tested in the cathode chamber for the effects of reducing agent on the power generation in MFCs. The average voltages of 0.26±0.014 V and 0.36±0.02 V were achieved with acetate using oxygen and potassium ferricyanide as reducing agent, respectively. Similarly, with glucose the average voltages of 0.256±0.05V and 0.340±0.04 V were obtained using oxygen and ferricyanide, respectively. Using potassium ferricyanide as the reducing agent, the power output increases by 39 and 43% with acetate and glucose, respectively, as compared to the dissolved oxygen. Slightly higher coulombic efficiency (CE%) was obtained in acetate as compared to MFCs operated with glucose. The maximum power densities of 124 mW/m2 and 204mW/m2 were obtained using dissolved oxygen and K3Fe(CN)6, respectively. CONCLUSION(s): This study demonstrates that power generation from the MFCs can be influenced significantly by the different types of catholyte. Relatively higher CE was obtained with K3Fe(CN)6. Thus, application of K3Fe(CN)6 as the catholyte can be vital for scaling uppower generation from the MFCs forreal time applications.
참고문헌 (22)
- Basu, D., "A study on direct glucose and fructose alkaline fuel cell", Electrochim. Acta, 55, pp.5775~5779 (2010)
- Chae, K. -J., "Effect of different substrates on the performance, bacterial diversity, and bacterial viability in microbial fuel cells", Bioresour. Technol, 100, pp.3518~3525 (2009)
- Gil, G. -C., "Operational parameters affecting the performannce of a mediator-less microbial fuel cell", Biosens. Bioelectron, 18, pp.327~334 (2003)
- Jeremiasse, A. W., "Microbial electrolysis cell with a microbialbiocathode", Bioelectrochem, 78, pp.39~43 (2010)
- Jung, S., "Comparison of anode bacterial communities and performance in microbial fuel cells with different electron donors", APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 77(2), pp.393~402 (2007), SPRINGER
- Little, T. M., "Agricultural Experimentation: Design and Analysis" (1978), John Wiley and Sons, Inc
- Liu, H., "Power Generation in Fed-Batch Microbial Fuel Cells as a Function of Ionic Strength, Temperature, and Reactor Configuration", Environ. Sci. Technol, 39, pp.5488~5493 (2005)
- Liu, Z., "Study of operational performance and electrical response on mediator-less microbial fuel cells fed with carbon- and protein-rich substrates", Biochem. Eng. J, 45, pp.185~191 (2009)
- Logan, B. E., "Microbial fuel cells: Methodology and technology", Environ. Sci. Technol, 40, pp.5181~5192 (2006)
- Logan, B. E., "Microbial fuel cells - Challenges and applications", Environ. Sci. Technol, 40, pp.5172~5180 (2006)
- Lu, N., "Electricity generation from starch processing wastewater using microbial fuel cell technology", Biochem. Eng. J, 43, pp.246~251 (2009)
- Mohan, S. V., "Bioelectricity production by mediatorless microbial fuel cell under acidophilic condition using wastewater as substrate: influence of susbtrate loading rate", Curr. Sci, 92, pp.1720~1726 (2007)
- Mohan, Y., "Electricity generation using microbial fuel cells", Int. J. Hydrogen Energy, 33, pp.423~426 (2008)
- Oh, S. -E., "Proton exchange membrane and electrode surface areas as factors that affect power generation in microbial fuel cells", Appl. Microbiol. Biotechnol, 70, pp.162~169 (2006)
- Oh, S., "Hydrogen and electricity production from a food processing wastewater using fermentation and microbial fuel cell technologies", Water Res, 39, pp.4673~4682 (2005)
- Oh, S. E., "Effects of applied voltages and dissolved oxygen on sustained power generation by microbial fuel cells", Water. Sci. Technol, 60, pp.1311~1317 (2009)
- Oh, S. E., "Cathode Performance as a Factor in Electricity Generation in Microbial Fuel Cells", Environ. Sci. Technol, 38, pp.4900~4904 (2004)
- Pant, D., "A review of the substrates used in microbial fuel cells (MFCs) for sustainable energy production", Bioresour. Technol, 101, pp.1533~1543 (2010)
- Rabaey, K., "Microbial fuel cells: Novel biotechnology for energy generation", Trends Biotechnol, 23, pp.291~298 (2005)
- Selembo, P.A., "The use of stainless steel and nickel alloys as low-cost cathodes in microbial electrolysis cells", J. Power Sources, 190, pp.271~278 (2009)
- Tran, H. T., "Nitrifying biocathode enables effective electriicty generation and sustainable wastewater treatment with microbial fuel cell", Water Sci. Technol, 59, pp.1803~1808 (2009)
- Zhang, Y., "Electricity generation and microbial community response to substrate changes in microbial fuel cell", Bioresour. Technol, 102, pp.1166~1173 (2011)