Three-dimensional hierarchical MoO2/MoC@NC-CC free-standing anode applied in microbial fuel cells

2022 ◽  
Author(s):  
Da Liu ◽  
Wen-Kai Fang ◽  
Jiangtao Li ◽  
Liling Zhang ◽  
Mei Yan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Electrocatalytic Activity ◽  
Microbial Fuel Cells ◽  
Three Dimensional ◽  
Free Standing ◽  
Higher Power

In general, more exoelectrogens’ enrichment implies higher power density. However, due to the low electrocatalytic activity of the anode, it limits the performance of microbial fuel cell. Here, based on...

scholarly journals Using Shewanella Oneidensis MR1 as a Biocatalyst in a Microscale Microbial Fuel Cell

2013 ◽  
Author(s):  
Jie Yang ◽  
Sasan Ghobadian ◽  
Reza Montazami ◽  
Nastaran Hashemi
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Shewanella Oneidensis ◽  
Proton Exchange ◽  
Carbon Cloth ◽  
Anode Chamber

Microbial fuel cell (MFC) technology is a promising area in the field of renewable energy because of their capability to use the energy contained in wastewater, which has been previously an untapped source of power. Microscale MFCs are desirable for their small footprints, relatively high power density, fast start-up, and environmentally-friendly process. Microbial fuel cells employ microorganisms as the biocatalysts instead of metal catalysts, which are widely applied in conventional fuel cells. MFCs are capable of generating electricity as long as nutrition is provided. Miniature MFCs have faster power generation recovery than macroscale MFCs. Additionally, since power generation density is affected by the surface-to-volume ratio, miniature MFCs can facilitate higher power density. We have designed and fabricated a microscale microbial fuel cell with a volume of 4 μL in a polydimethylsiloxane (PDMS) chamber. The anode and cathode chambers were separated by a proton exchange membrane. Carbon cloth was used for both the anode and the cathode. Shewanella Oneidensis MR-1 was chosen to be the electrogenic bacteria and was inoculated into the anode chamber. We employed Ferricyanide as the catholyte and introduced it into the cathode chamber with a constant flow rate of approximately 50 μL/hr. We used trypticase soy broth as the bacterial nutrition and added it into the anode chamber approximately every 15 hours once current dropped to base current. Using our miniature MFC, we were able to generate a maximum current of 4.62 μA.

Three-dimensional, highly porous N-doped carbon foam as microorganism propitious, efficient anode for high performance microbial fuel cell

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 25799-25807 ◽  
Author(s):  
Thi Hiep Han ◽  
Sandesh Y. Sawant ◽  
Sun-Jin Hwang ◽  
Moo Hwan Cho
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
High Performance ◽  
Three Dimensional ◽  
Carbon Foam ◽  
Graphite Felt ◽  
Higher Power ◽  
Highly Porous

Microbial fuel cell based on as-prepared N-doped carbon foam produced 2 times higher power density than the commercial graphite felt.

scholarly journals PENGARUH JENIS ELEKTRODA TERHADAP POWER DENSITY PADA MICROBIAL FUEL CELL DENGAN PENAMBAHAN GRANULAR ACTIVATED CARBON

2020 ◽  
Vol 12 (2) ◽  
pp. 1-9
Author(s):  
Vidia Wahyu Meidy Safitri ◽  
Tuhu Agung Rachmanto
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Liquid Waste ◽  
Electrical Energy ◽  
Organic Content ◽  
Energy Utilization ◽  
Pre Treatment

ABSTRAK Limbah cair tahu mengandung kandungan organik tinggi dengan konsentrasi COD 1408 mg/l, TSS 191 mg/l dan pH 4,46.  Salah satu penelitian dengan pemanfaatan limbah dan energi yaitu Microbial Fuel cell (MFC). Energi Kimia senyawa organik dari mikroorganisme akan dirubah menjadi energi listrik dengan reaksi katalik dari mikroorganisme dalam keadaan anaerob merupakan proses microbial fuel cells. Salah satu tantangan untuk mengembangkan sistem MFC adalah dengan memilih elektroda yang tepat. Elektroda yang digunakan harus memiliki daya konduktifitas listrik tinggi, pemukaan yang luas, non korosif, biokompatibel, stabil. Penelitian ini bertujuan untuk memgetahui jenis elektroda optimum dalam menghasilkan power density dengan variasi elektroda karbon grafit, seng dan tembaga, variasi waktu 0, 48, 96, 144, dan 192 jam. Dilakukan pre-treatment koagulasi flokulasi. Hasil penelitian menunjukkan bahwa MFC dengan elektroda karbon grafit dan karbon grafit menghaslikan power density sebesar 2292,994 mW/m2. MFC juga menurunkan konsentrasi COD hingga 88%. Waktu pengolahan dapat mempengaruhi efisiensi penyisihan COD.   Kata kunci: limbah tahu, microbial fuel cell, power density   ABSTRACT   Tofu liquid waste contains high organic content with a COD concentration of 1408 mg / l, TSS 191 mg / l and pH 4.46. One of the researches related to waste and energy utilization is Microbial Fuel cell (MFC). Chemical energy organic compounds from microorganism will be converted into electrical energy by the catalytic reaction of microorganism in anaerobic conditions is a process of microbial fuel cells. One of the challenges to developing an MFC system is to choose the right electrodes. The electrodes used must have high electrical conductivity, a wide surface, non-corrosive, biocompatible, stable. This study aims to find out the most optimum type of electrode in producing power density with variations of carbon graphite, zinc and copper, variations of 0, 48, 96, 144, and 192 hours. The pre-treatment are Coagulation-flocculation. The results showed that MFC with carbon graphite and carbon graphite electrodes produced a power density of 2292,994 mW/m2. MFC also reduces COD concentrations up to 88%. Processing time can affect the efficiency of COD removal.   Keywords: Tofu Liquid Waste, Microbial Fuel Cells, power density

scholarly journals Produksi Energi Listrik Dari Limbah Kulit Pisang (Musa Paradisiaca L.) Menggunakan Teknologi Microbial Fuel Cells Dengan Permanganat Sebagai Katolit

al-Kimiya ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 62-67
Author(s):  
Lisa Utami ◽  
Lazulva Lazulva ◽  
Yuni Fatisa
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Musa Paradisiaca

Penelitian ini bertujuan untuk mempelajari bagaimana potensi biomassa yang tidak termanfaatkan yaitu limbah kulit pisang sebagai sumber energi listrik menggunakan teknologi Microbial Fuel Cell (MFC). Pengamatan dilakukan terhadap reaktor bejana yang didesain dengan dua chamber (anoda dan katoda) menggunakan KMnO4 sebagai katolit dan dihubungkan dengan rangkaian sel elektrokimia (sel volta) kemudian diukur nilai tegangan, arus, power density yang dihasilkan dari rangkaian limbah kulit pisang selama 17 hari. Hasil pengukuran nilai tegangan maksimum, arus maksimum dan power density maksimum yang dihasilkan dari reaktor didapatkan berturut-turut sebagai berikut : 1.455 volt; 0,032 miliampere; dan 31,9 mW/m2. Limbah kulit pisang dapat digunakan untuk memproduksi arus listrik..

A miniaturized microbial fuel cell with three-dimensional graphene macroporous scaffold anode demonstrating a record power density of over 10 000 W m−3

Nanoscale ◽  
2016 ◽  
Vol 8 (6) ◽  
pp. 3539-3547 ◽  
Author(s):  
Hao Ren ◽  
He Tian ◽  
Cameron L. Gardner ◽  
Tian-Ling Ren ◽  
Junseok Chae
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
High Power ◽  
Three Dimensional ◽  
High Power Density ◽  
Free Standing

We report a miniaturized microbial fuel cell, integrated with a 3D free-standing graphene scaffold, delivering a record high power density of 11 220 W m−3.

Improvement of Microbial Fuel Cell Performance by Using Nafion Polyaniline Composite Membranes as a Separator

2013 ◽  
Vol 10 (4) ◽  
Author(s):  
Nader Mokhtarian ◽  
Mostafa Ghasemi ◽  
Wan Ramli Wan Daud ◽  
Manal Ismail ◽  
Ghasem Najafpour ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Proton Conductivity ◽  
Microbial Fuel Cells ◽  
Composite Membranes ◽  
Infrared Analysis ◽  
Fuel Cell Performance ◽  
Fuel Cell Operation

The characteristics of four new proton-conducting membranes, Nafion112/polyaniline composite membranes of various compositions, are studied for application as membrane separators in microbial fuel cells. The composite membranes are made by immersing Nafion-112 membranes in a solution containing aniline for different immersion times. The presence of polyaniline and sulfonic functional groups in the composite membranes is confirmed by means of Fourier transform infrared analysis while their surface roughness is determined by using atomic force microscopy prior to microbial fuel cell operation. Biofouling on the membranes' surface is also examined by using a scanning electron microscope after microbial fuel cell operation. The polarization curves and, hence, the power density curves are measured by varying the load's resistance. The power density of the microbial fuel cell with the Nafion/polyaniline composite membranes improves significantly as the amount of polyaniline increases because the interaction between sulfonic groups in the Nafion matrix and polyaniline in the polyaniline domains increases proton conductivity. However, it declines after more polyaniline is added because of less conjugated bonding of polyaniline and sulfonic acid groups for larger polyaniline domains in the Nafion matrix. The voltage overpotential is also smaller as the amount of polyaniline increases. Biofouling also decreases with increasing polyaniline in the Nafion/polyaniline composite membranes because they have smoother surfaces than Nafion membranes. The results show that the maximum power generated by the microbial fuel cells with Nafion112-polyaniline composite membrane is 124.03 mV m−2 with a current density of 454.66 mA m−2, which is approximately more than ninefold higher than that of microbial fuel cells with neat Nafion-112. It can be concluded that the power density of the microbial fuel cell can be increased by modifying the Nafion membrane separators with more conductive polymers that are less susceptible to biofouling to improve its proton conductivity.

scholarly journals Lack of Electricity Production by Pelobacter carbinolicus Indicates that the Capacity for Fe(III) Oxide Reduction Does Not Necessarily Confer Electron Transfer Ability to Fuel Cell Anodes

2007 ◽  
Vol 73 (16) ◽  
pp. 5347-5353 ◽  
Author(s):  
Hanno Richter ◽  
Martin Lanthier ◽  
Kelly P. Nevin ◽  
Derek R. Lovley
Keyword(s):  
Electron Transfer ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Microbial Fuel Cells ◽  
Electron Donors ◽  
Rrna Genes ◽  
Anode Surface ◽  
Oxide Reduction ◽  
Fuel Cell Anodes

ABSTRACT The ability of Pelobacter carbinolicus to oxidize electron donors with electron transfer to the anodes of microbial fuel cells was evaluated because microorganisms closely related to Pelobacter species are generally abundant on the anodes of microbial fuel cells harvesting electricity from aquatic sediments. P. carbinolicus could not produce current in a microbial fuel cell with electron donors which support Fe(III) oxide reduction by this organism. Current was produced using a coculture of P. carbinolicus and Geobacter sulfurreducens with ethanol as the fuel. Ethanol consumption was associated with the transitory accumulation of acetate and hydrogen. G. sulfurreducens alone could not metabolize ethanol, suggesting that P. carbinolicus grew in the fuel cell by converting ethanol to hydrogen and acetate, which G. sulfurreducens oxidized with electron transfer to the anode. Up to 83% of the electrons available in ethanol were recovered as electricity and in the metabolic intermediate acetate. Hydrogen consumption by G. sulfurreducens was important for ethanol metabolism by P. carbinolicus. Confocal microscopy and analysis of 16S rRNA genes revealed that half of the cells growing on the anode surface were P. carbinolicus, but there was a nearly equal number of planktonic cells of P. carbinolicus. In contrast, G. sulfurreducens was primarily attached to the anode. P. carbinolicus represents the first Fe(III) oxide-reducing microorganism found to be unable to produce current in a microbial fuel cell, providing the first suggestion that the mechanisms for extracellular electron transfer to Fe(III) oxides and fuel cell anodes may be different.

Conductive polypyrrole hydrogels and carbon nanotubes composite as an anode for microbial fuel cells

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 50968-50974 ◽  
Author(s):  
Xinhua Tang ◽  
Haoran Li ◽  
Zhuwei Du ◽  
Weida Wang ◽  
How Yong Ng
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Power Density ◽  
Electrocatalytic Activity ◽  
Microbial Fuel Cells ◽  
Conductive Polypyrrole

Polypyrrole hydrogels/carbon nanotubes enhanced electrocatalytic activity, biocompatibility and power density in microbial fuel cells.

scholarly journals Comparative Study on the Effects of Three Membrane Modification Methods on the Performance of Microbial Fuel Cell

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1383 ◽  
Author(s):  
Liping Fan ◽  
Junyi Shi ◽  
Tian Gao
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Water Purification ◽  
Microbial Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Generation Capacity ◽  
Exchange Membrane

Proton exchange membrane is an important factor affecting the power generation capacity and water purification effect of microbial fuel cells. The performance of microbial fuel cells can be improved by modifying the proton exchange membrane by some suitable method. Microbial fuel cells with membranes modified by SiO2/PVDF (polyvinylidene difluoride), sulfonated PVDF and polymerized MMA (methyl methacrylate) electrolyte were tested and their power generation capacity and water purification effect were compared. The experimental results show that the three membrane modification methods can improve the power generation capacity and water purification effect of microbial fuel cells to some extent. Among them, the microbial fuel cell with the polymerized MMA modified membrane showed the best performance, in which the output voltage was 39.52 mV, and the electricity production current density was 18.82 mA/m2, which was 2224% higher than that of microbial fuel cell with the conventional Nafion membrane; and the COD (chemical oxygen demand) removal rate was 54.8%, which was 72.9% higher than that of microbial fuel cell with the conventional Nafion membrane. Modifying the membrane with the polymerized MMA is a very effective way to improve the performance of microbial fuel cells.

scholarly journals Microbial Fuel Cells, Related Technologies, and Their Applications

2018 ◽  
Vol 8 (12) ◽  
pp. 2384 ◽  
Author(s):  
Gene Drendel ◽  
Elizabeth R. Mathews ◽  
Lucie Semenec ◽  
Ashley E. Franks
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Engineering Design ◽  
Microbial Fuel Cell ◽  
Microbial Fuel Cells ◽  
Energy Production ◽  
Emerging Technology ◽  
Engineering Material ◽  
Cell Systems ◽  
Material Sciences

Microbial fuel cells present an emerging technology for utilizing the metabolism of microbes to fuel processes including biofuel, energy production, and the bioremediation of environments. The application and design of microbial fuel cells are of interest to a range of disciplines including engineering, material sciences, and microbiology. In addition, these devices present numerous opportunities to improve sustainable practices in different settings, ranging from industrial to domestic. Current research is continuing to further our understanding of how the engineering, design, and microbial aspects of microbial fuel cell systems impact upon their function. As a result, researchers are continuing to expand the range of processes microbial fuel cells can be used for, as well as the efficiency of those applications.

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