Bioelectrochemical System
Bioelectrochemical System - Related Videos
09:50
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
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Cited by 31 •
2015
We demonstrate the extraction of ammonium from an ammonium-rich stream using an electrochemical and a bioelectrochemical system. The reactor setup, operation and data analysis are discussed.
10:23
Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System
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Cited by 4 •
2024
Here we present a protocol for characterizing mediated extracellular electron transfer (EET) in lactic acid bacteria using a three-electrode, two-chamber bioelectrochemical system. We illustrate this method with Lactiplantibacillus plantarum and the redox mediator 1,4-dihydroxy-2-naphthoic acid and provide a thorough description of the electrochemical techniques used to evaluate mediated EET.
07:39
Electrochemical Biosensing
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2023
Electrochemical biosensors detect the binding of a target molecule by sensing an oxidation-reduction event. These sensors paved the way for modern biosensing after the invention of the glucose biosensor. This video will introduce electrochemical biosensing, show the workings of the glucose biosensor, and discuss how electrochemical biosensors are used in cancer detection.
08:37
Cyclic Voltammetry (CV)
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2023
Source: Laboratory of Dr. Kayla Green — Texas Christian University A Cyclic Voltammetry (CV) experiment involves the scan of a range of potential voltages while measuring current. In the CV experiment, the potential of an immersed, stationary electrode is scanned from a predetermined starting potential to a final value (called the switching potential) and then the reverse scan is obtained. This gives a 'cyclic' sweep of potentials and the current vs. potential curve derived from the data is...
09:09
Large-Scale Production of Extracellular Vesicles from High-Density 3D Cell Cultures in Hollow Fiber Perfusion Bioreactors
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2026
Instructions are provided for setting up and using a 3D perfusion hollow fiber bioreactor for extracellular vesicle production from MSC and other cell types. This protocol describes a method for producing extracellular vesicles at high concentrations on a continuous basis while controlling cell density in hollow fiber bioreactors.
FAQs
The key pathway is a sequence of oxidation, electron transport, and reduction. Microbes oxidize organic compounds at the anode, releasing electrons. Those electrons pass through an external circuit to the cathode, where a reduction reaction consumes them, often together with protons or oxygen. This links cellular redox chemistry to measurable electrical flow.
The two electrodes support complementary half-reactions. At the anode, microbial oxidation of organic compounds releases electrons, while the cathode accepts those electrons through a reduction reaction. Protons or oxygen may participate at the cathode, so electrode chemistry determines how the electron flow is consumed and helps connect biological activity with the overall redox process.
Bioelectrochemical systems are useful in chemistry because they expose how biological oxidation can be coupled to controlled electron transfer. The electrode provides a point for studying movement of electrons from living cells, while the cathodic reaction completes the redox pathway. This makes the platform valuable for linking molecular mechanisms with controllable metabolism and applied chemical processes.
A basic arrangement includes living cells or microbes, an organic compound that can be oxidized, an anode, a cathode, and an external electrical circuit. The anode receives electrons released by microbial activity, and the cathode supplies a reaction that consumes them, often involving protons or oxygen. These elements establish the essential linked biological and electrochemical reactions.
In wastewater research, microbial oxidation can be coupled to pollutant removal and electrical generation. Organic compounds in the treatment stream serve as substrates for microbial activity, while electron transfer through the system produces current. This approach also supports resource recovery, making BES research relevant when treatment goals are combined with energy or useful-product objectives.
The desired output depends on the design and research question. A system may generate electrical current, produce fuels or chemicals, remove pollutants, or support resource recovery. Other configurations serve as biosensors, using the connection between biological activity and electrochemical response, or as research tools for examining electron transfer and microbial metabolism.