Biological denitrification in microbial fuel cells.

By Peter Clauwaert, Korneel Rabaey, P. Aelterman, L. de Schamphelaire, T. H. Pham, P. Boeckx, N. Boon, W. Verstraete. Environmental Science and Technology, 2007

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Extracellular electron transfer of biocathodes: Revealing the potentials for nitrate and nitrite reduction of denitrifying microbiomes dominated by Thiobacillus sp. (2014, background): “inorganic carbon being the only microbial carbon source [3, 4].”
Microbial Fuel Cells: Recent Advances, Bacterial Communities and Application Beyond Electricity Generation (2008, background): “Recently, Clauwaert et al. (2007)30) demonstrated that full biological denitrification is possible at a biocathode in the acetate-fed MFC.”
Sustainable photosynthetic biocathode in microbial desalination cells (2015, background): “As power production is limited by cathodic potential, we can present the power density on the basis of cathode chamber volume [30].”
Scaling up microbial fuel cells and other bioelectrochemical systems (2010, background): “Cathodes using only bacteria (biocathodes) for increasing current densities above that of the plain material show great promise, but so far, these systems have required the use of dissolved oxygen rather than air (Bergel et al. 2005; Clauwaert et al. 2007b; He and Angenent 2006).”
The microbe electric: conversion of organic matter to electricity. (2008, background): “Nitrate removal from wastewater via direct electron transfer from electrodes to denitrifying microorganisms has also been proposed [49 ,50], but the microbiology of this process has yet to be investigated in detail.”