Cisplatin-induced elongation of Shewanella oneidensis MR-1 cells improves microbe–electrode interactions for use in microbial fuel cells

2013 ◽  
Vol 6 (9) ◽  
pp. 2626 ◽  
Author(s):  
Sunil A. Patil ◽  
Kamil Górecki ◽  
Cecilia Hägerhäll ◽  
Lo Gorton
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Shewanella Oneidensis

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.

scholarly journals The influence of acidity on microbial fuel cells containing Shewanella oneidensis

2008 ◽  
Vol 24 (4) ◽  
pp. 900-905 ◽  
Author(s):  
Justin C. Biffinger ◽  
Jeremy Pietron ◽  
Orianna Bretschger ◽  
Lloyd J. Nadeau ◽  
Glenn R. Johnson ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Shewanella Oneidensis

scholarly journals Laccase Immobilization Strategies for Application as a Cathode Catalyst in Microbial Fuel Cells for Azo Dye Decolourization

2021 ◽  
Vol 11 ◽  
Author(s):  
Priyadharshini Mani ◽  
V. T. Fidal ◽  
Taj Keshavarz ◽  
T. S. Chandra ◽  
Godfrey Kyazze
Keyword(s):  
Enzyme Activity ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Shewanella Oneidensis ◽  
Alginate Beads ◽  
Reduction Reaction ◽  
Anode Chamber ◽  
Acid Orange 7 ◽  
Dye Decolourization ◽  
Freely Suspended

Enzymatic biocathodes have the potential to replace platinum as an expensive catalyst for the oxygen reduction reaction in microbial fuel cells (MFCs). However, enzymes are fragile and prone to loss of activity with time. This could be circumvented by using suitable immobilization techniques to maintain the activity and increase longevity of the enzyme. In the present study, laccase from Trametes versicolor was immobilized using three different approaches, i.e., crosslinking with electropolymerized polyaniline (PANI), entrapment in copper alginate beads (Cu-Alg), and encapsulation in Nafion micelles (Nafion), in the absence of redox mediators. These laccase systems were employed in cathode chambers of MFCs for decolourization of Acid orange 7 (AO7) dye. The biocatalyst in the anode chamber was Shewanella oneidensis MR-1 in each case. The enzyme in the immobilized states was compared with freely suspended enzyme with respect to dye decolourization at the cathode, enzyme activity retention, power production, and reusability. PANI laccase showed the highest stability and activity, producing a power density of 38 ± 1.7 mW m−2 compared to 25.6 ± 2.1 mW m−2 for Nafion laccase, 14.7 ± 1.04 mW m−2 for Cu-Alg laccase, and 28 ± 0.98 mW m−2 for the freely suspended enzyme. There was 81% enzyme activity retained after 1 cycle (5 days) for PANI laccase compared to 69% for Nafion and 61.5% activity for Cu-alginate laccase and 23.8% activity retention for the freely suspended laccase compared to initial activity. The dye decolourization was highest for freely suspended enzyme with over 85% decolourization whereas for PANI it was 75.6%, Nafion 73%, and 81% Cu-alginate systems, respectively. All the immobilized laccase systems were reusable for two more cycles. The current study explores the potential of laccase immobilized biocathode for dye decolourization in a microbial fuel cell.

Intensification of bioelectricity generation in microbial fuel cells using Shewanella oneidensis MR-1 mutants with increased reducing activity

Microbiology ◽  
2013 ◽  
Vol 82 (4) ◽  
pp. 410-414 ◽  
Author(s):  
T. A. Voeikova ◽  
L. K. Emel’yanova ◽  
L. M. Novikova ◽  
R. S. Shakulov ◽  
K. V. Sidoruk ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Shewanella Oneidensis ◽  
Bioelectricity Generation ◽  
Reducing Activity

Innovative statistical interpretation of Shewanella oneidensis microbial fuel cells data

2014 ◽  
Vol 16 (19) ◽  
pp. 8956-8969 ◽  
Author(s):  
Sofia Babanova ◽  
Orianna Bretschger ◽  
Jared Roy ◽  
Andrea Cheung ◽  
Kateryna Artyushkova ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Shewanella Oneidensis ◽  
Principal Component ◽  
Component Analysis ◽  
Statistical Interpretation ◽  
Uncertainty Of Measurement ◽  
Predictive Capability ◽  
Measurement Results

Principal component analysis in combination with uncertainty of measurement results enables the predictive capability to optimize biology and engineering simultaneously.

Power generation of Shewanella oneidensis MR-1 microbial fuel cells in bamboo fermentation effluent

2020 ◽  
Author(s):  
Hue Ngan Dai ◽  
Tam-Anh Duong Nguyen ◽  
Loan-Phung My LE ◽  
Man Van Tran ◽  
Tzu-Hsuan Lan ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Shewanella Oneidensis
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