Comparative analysis of power production of pure, coculture, and mixed culture in a microbial fuel cell

Jothinathan, Deepika; Wilson, Richard Thilagaraj

doi:10.1080/15567036.2016.1233306

Cited by 22 publications

(5 citation statements)

References 16 publications

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“…The weak electroactivity of the has been repeatedly reported. Bacillus thuringiensis DRR-1 from cow rumen produced a small potential and current when cultivated in an MFC with unspecified rich medium (Jothinathan & Wilson, 2017). B. cereus was also cultivated on an MFC anode and produced a high current output (Islam et al, 2017).…”

Section: Bacillusmentioning

confidence: 99%

Weak electricigens: A new avenue for bioelectrochemical research

Doyle

Marsili

2018

Bioresource Technology

117

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Section: Bacillusmentioning

confidence: 99%

Weak electricigens: A new avenue for bioelectrochemical research

Doyle

Marsili

2018

Bioresource Technology

117

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“…in the reactor inoculated with rumen could have a positive effect on performance. Previous studies had reported electrochemical activity by some species of Paracoccus [ 51 , 52 ]. However, in the presence of oxygen and nitrate, Paracoccus spp.…”

Section: Resultsmentioning

confidence: 99%

Rumen Inoculum Enhances Cathode Performance in Single-Chamber Air-Cathode Microbial Fuel Cells

2022

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During the last decade, bioprospecting for electrochemically active bacteria has included the search for new sources of inoculum for microbial fuel cells (MFCs). However, concerning power and current production, a Geobacter-dominated mixed microbial community derived from a wastewater inoculum remains the standard. On the other hand, cathode performance is still one of the main limitations for MFCs, and the enrichment of a beneficial cathodic biofilm emerges as an alternative to increase its performance. Glucose-fed air-cathode reactors inoculated with a rumen-fluid enrichment and wastewater showed higher power densities and soluble chemical oxygen demand (sCOD) removal (Pmax = 824.5 mWm−2; ΔsCOD = 96.1%) than reactors inoculated only with wastewater (Pmax = 634.1 mWm−2; ΔsCOD = 91.7%). Identical anode but different cathode potentials suggest that differences in performance were due to the cathode. Pyrosequencing analysis showed no significant differences between the anodic community structures derived from both inocula but increased relative abundances of Azoarcus and Victivallis species in the cathodic rumen enrichment. Results suggest that this rarely used inoculum for single-chamber MFCs contributed to cathodic biofilm improvements with no anodic biofilm effects.

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“…These flavins enable Bacillus sp. to mediate electron transfer to electrodes in MFC [62] , [68] , and provide a boost to electricity generation in microbial consortia with Gram-negative bacteria or yeasts [60] , [69] , [70] . Recently, it was also shown that flavins are secreted by Rhodococcus ruber DIF2, and that flavin mononucleotide (FMN) plays an important role in the EET of this bacterium to electrodes [62] .…”

Section: Indirect Electron Transfer In Gram-positive Bacteriamentioning

confidence: 99%