Microbial fuel cells (MFCs) emerge as an environmentally friendly technology where bacteria drive the electricity production from the chemical energy stored in a specific substrate. The effects of global warming on everyday life, along with the fossil fuel depletion have fuelled the search for alternative, clean energy technologies. Results showed the direct relationship between the bacterial community composition, originating from the different inocula, and power generation within the MFCs. These results are directly related to the establishment and adaptation of the microbial community on the anode during the assay.
The power performance of these systems increased over time whereas the power output by MFCs inoculated either with stored urine or effluent decreased after day 30. The results showed that MFCs inoculated with sludge outperformed the rest and reached a maximum power output of 40.38 mW Thus, this work aims at analysing the impact of 3 different types of inoculum: (i) stored urine, (ii) sludge and (iii) effluent from a working MFC, on the microbial community of the anodic biofilm and therefore on the power performance of urine-fed ceramic MFCs. The development of an efficient anodic biofilm has a significant impact on the power performance of this technology so it is essential to understand the effects of the inoculum nature on the anodic bacterial diversity and establish its relationship with the power performance of the system.
Bacteria are the driving force of the microbial fuel cell (MFC) technology, which benefits from their natural ability to degrade organic matter and generate electricity.
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