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A Cost-effective and Field-ready Potentiostat That Poises Subsurface Electrodes to Monitor Bacterial Respiration by Elliot S. Friedman; Miriam A. Rosenbaum; Alexander W. Lee; David. A. Lipson; Bruce R. Land; Largus T. Angenent is a Engineering article available to read on EtoBox.
What is A Cost-effective and Field-ready Potentiostat That Poises Subsurface Electrodes to Monitor Bacterial Respiration about?
Here, we present the proof-of-concept for a subsurface bioelectrochemical system (BES)-based biosensor capable of monitoring microbial respiration that occurs through exocellular electron transfer. This system includes our open-source design of a three-channel microcontroller-unit (MCU)-based potentiostat that is capable of chronoamperometry, which laboratory tests showed to be accurate within 0.95 ± 0.58% (95% Confidence Limit) of a commercial potentiostat. The potentiostat design is freely available online: http://angenent.bee.cornell.edu/potentiostat.html. This robust and field-ready potentiostat, which can withstand temperatures of -30°C, can be manufactured at relatively low cost ($600), thus, allowing for en-masse deployment at field sites. The MCU-based potentiostat was integrated with electrodes and a solar panel-based power system, and deployed as a biosensor to monitor microbial respiration in drained thaw lake basins outside Barrow, AK. At three different depths, the working electrode of a microbial three-electrode system (M3C) was maintained at potentials corresponding to the microbial reduction of iron(III) compounds and humic acids. Thereby, the working electrode mimi
Who reads A Cost-effective and Field-ready Potentiostat That Poises Subsurface Electrodes to Monitor Bacterial Respiration?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Elliot S. Friedman; Miriam A. Rosenbaum; Alexander W. Lee; David. A. Lipson; Bruce R. Land; Largus T. Angenent
- Publisher
- Elsevier BV
- Published
- 2012
- Language
- EN
- Field
- Engineering (Physical Sciences)