The high enrichment of Geobacter by TiN nanoarray anode catalyst for efficient microbial fuel cells

2021 ◽  
Vol 9 (12) ◽  
pp. 7726-7735
Author(s):  
Da Liu ◽  
Weicheng Huang ◽  
Qinghuan Chang ◽  
Lu Zhang ◽  
Ruiwen Wang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Hierarchical Structure ◽  
Microbial Fuel Cells ◽  
Dft Calculation ◽  
Experimental Results ◽  
Carbon Cloth ◽  
Anode Catalyst ◽  
High Enrichment

TiN nanoarrays, in situ grown on carbon cloth gather 97.2% of the model exoelectrogen Geobacter, greatly enhancing the MFCs' performance. The experimental results and DFT calculation certify the importance of the micro–nano-hierarchical structure.

scholarly journals Scaling up Microbial Fuel Cells for Treating Swine Wastewater

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1803 ◽  
Author(s):  
Yuko Goto ◽  
Naoko Yoshida
Keyword(s):  
Organic Matter ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Removal Rate ◽  
Oxygen Demand ◽  
Cod Removal ◽  
Swine Wastewater ◽  
Flow Mode ◽  
Carbon Cloth ◽  
Simultaneous Generation

Conventional aerobic treatment of swine wastewater, which generally contains 4500–8200 mg L−1 of organic matter, is energy-consuming. The aim of this study was to assess the application of scaled-up microbial fuel cells (MFCs) with different capacities (i.e., 1.5 L, 12 L, and 100 L) for removing organic matter from swine wastewater. The MFCs were single-chambered, consisting of an anode of microbially reduced graphene oxide (rGO) and an air-cathode of platinum-coated carbon cloth. The MFCs were polarized via an external resistance of 3–10 Ω for 40 days for the 1.5 L-MFC and 120 days for the 12L- and 100 L-MFC. The MFCs were operated in continuous flow mode (hydraulic retention time: 3–5 days). The 100 L-MFC achieved an average chemical oxygen demand (COD) removal efficiency of 52%, which corresponded to a COD removal rate of 530 mg L−1 d−1. Moreover, the 100 L-MFC showed an average and maximum electricity generation of 0.6 and 2.2 Wh m−3, respectively. Our findings suggest that MFCs can effectively be used for swine wastewater treatment coupled with the simultaneous generation of electricity.

scholarly journals Positive effects of concomitant heavy metals and their reduzates on hexavalent chromium removal in microbial fuel cells

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15107-15115 ◽  
Author(s):  
Xiayuan Wu ◽  
Chunrui Li ◽  
Zuopeng Lv ◽  
Xiaowei Zhou ◽  
Zixuan Chen ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fuel Cells ◽  
Hexavalent Chromium ◽  
Microbial Fuel Cells ◽  
Chromium Removal ◽  
Positive Effects ◽  
Bioelectricity Generation ◽  
Co Reduction

The cooperative cathode modification by BioAu from Au(iii) and in situ Cu(ii) co-reduction enhanced Cr(vi) removal and bioelectricity generation in MFCs.

scholarly journals In situ continuous current production from marine floating microbial fuel cells

2018 ◽  
Vol 230 ◽  
pp. 78-85 ◽  
Author(s):  
Giulia Massaglia ◽  
Valentina Margaria ◽  
Adriano Sacco ◽  
Tonia Tommasi ◽  
Simona Pentassuglia ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Continuous Current ◽  
Current Production

Enhanced performances of microbial fuel cells using surface-modified carbon cloth anodes: A comparative study

2014 ◽  
Vol 39 (33) ◽  
pp. 19148-19155 ◽  
Author(s):  
Jun Zhang ◽  
Jun Li ◽  
Dingding Ye ◽  
Xun Zhu ◽  
Qiang Liao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Comparative Study ◽  
Microbial Fuel Cells ◽  
Carbon Cloth ◽  
Surface Modified

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.

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