Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Validity and Reproducibility of Various Linear Sweep Voltammetry Tests of Anode and Cathode Electrodes in Microbial Electrolysis Cells

Version 1 : Received: 28 August 2020 / Approved: 30 August 2020 / Online: 30 August 2020 (11:45:33 CEST)

How to cite: Chai, H.; Koo, B.; Son, S.; Jung, S.P. Validity and Reproducibility of Various Linear Sweep Voltammetry Tests of Anode and Cathode Electrodes in Microbial Electrolysis Cells. Preprints 2020, 2020080664 (doi: 10.20944/preprints202008.0664.v1). Chai, H.; Koo, B.; Son, S.; Jung, S.P. Validity and Reproducibility of Various Linear Sweep Voltammetry Tests of Anode and Cathode Electrodes in Microbial Electrolysis Cells. Preprints 2020, 2020080664 (doi: 10.20944/preprints202008.0664.v1).

Abstract

Electrode is a key component in a microbial electrolysis cell (MEC) and it needs significant improvement for practical implementation of MEC. For effective development of electrode technology, accurate and reproducible analytical methods are very important. Linear sweep voltammetry (LSV) is an essential analytical method for evaluating electrode performance; however, it has not been firmly established yet in the MEC field. In this study, biological brush (BB), abiotic brush (AB), Pt wire (PtW), stainless steel wire (SSW) and mesh (SSM)) were tested to explore the most suitable counter electrode in different medium conditions. Coefficient of variation (CV) for Imax of LSV were comparatively analyzed. In BB-anode LSV, SSW (0.48%) and SSM (2.17%) showed higher reproducibility as a counter electrode. In SSM-cathode LSV, BB (1.76%) and PtW (2.01%) produced more reproducible results. In the Ni-AC-SSM-cathode LSV, PtW (3.54%) and BB (8.81%) produced more reproducible result. It shows electrode used in the operation is an appropriate counter electrode in the acetate-added condition. However, in the absence of acetate, PtW (1.24%) and BB (1.71%) produced more reproducible results in SSM cathode and PtW (0.61%) and SSW (1.21%) did in the Ni-AC-SSM-cathode, showing PtW is an appropriate counter electrode. These results also shows that PtW is an appropriate counter electrode in cathode LSV.

Subject Areas

Microbial electrolysis cells; Linear sweep voltammetry; Counter electrode; Coefficient of variation; Reproducibility

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.