No re-calibration required? Stability of a bioelectrochemical sensor for biodegradable organic matter over 800 days.

ABSTRACT: Microbial Fuel Cells (MFCs) operated as biosensors could potentially enable truly low-cost, real-time monitoring of organic loading in wastewaters. The current generated by MFCs has been correlated with conventional measures of organic load such as Biochemical Oxygen Demand (BOD), but much remains to be established in terms of the reliability and applicability of such sensors. In this study, batch-mode and multi-stage, flow-mode MFCs were operated for over 800 days and regularly re-calibrated with synthetic wastewater containing glucose and glutamic acid (GGA). BOD₅ calibration curves were obtained by normalising the current measured as a percentage of maximum current. There was little drift between recalibrations and non-linear Hill models of the combined dataset had R²

SUBMITTER: Spurr MW 

PROVIDER: S-EPMC8316843 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature