Work

In situ electrochemical monitoring with an open circuit auxiliary electrode in microbial electrochemical cells treating sediments

Year: 2025

Type: article

Abstract: to study the oxidation of propionate by the microbial community present in the reactor. Continuous monitoring of the electrode potentials, cyclic voltammetry (CV) at different scan rates and electrochemical impedance spectroscopy (EIS) data were obtained throughout the experiment to compare the results from the AE and the WE. The open-circuit auxiliary electrode (AE) was useful to control the state of the electrolyte and to distinguish changes in the system caused by the continuous polarization. The use of the AE allowed to compare the changes in the EIS diffusion slope caused by the WE polarization. This study showed that AE in MECs helps to understand and predict the electrochemical reactions more precisely.

Source: RSC Advances

DOI: 10.1039/d5ra03133h

Authors: Carlos Sánchez, Amitap Khandelwal, Piet N. L. Lens

Institution: Ollscoil na Gaillimhe – University of Galway

Language: English

Topic: Microbial Fuel Cells and Bioremediation

Subfield: Environmental Engineering

Field: Environmental Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funders: Department of Foreign Affairs and Trade, Ireland, Science Foundation Ireland