Increased Power in Sediment Microbial Fuel Cell: Facilitated Mass Transfer via a Water-Layer Anode Embedded in Sediment.

Increased Power in Sediment Microbial Fuel Cell: Facilitated Mass Transfer via a Water-Layer Anode Embedded in Sediment.

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We report a methodology for enhancing the mass transfer at the anode electrode of sediment microbial fuel cells (SMFCs), by employing a fabric baffle to create a separate water-layer hindigyanvishv.com for installing the anode electrode in sediment.The maximum power in an SMFC with the anode installed in the separate water-layer (SMFC-wFB) was improved by factor of 6.6 compared to an SMFC having the anode embedded in the sediment (SMFC-woFB).The maximum current density in the SMFC-wFB was also 3.

9 times higher (220.46 mA/m2) than for the SMFC-woFB.We found that the increased performance in the SMFC-wFB was due to the improved mass transfer rate of organic matter obtained by employing the water-layer during anode installation in the sediment layer.Acetate injection tests revealed that the SMFC-wFB could be applied to natural water bodies ut solution gel for cats in which there is frequent organic contamination, based on the acetate flux from the cathode to the anode.