As I read, CV tests are done to check the activity of biofilm forms on an anode or a cathode in MFCs or MECs, based on the application, it can asses oxidation or reduction in any of these electrodes, e.g, reduction activity in biocathode in MEC. How I can run CV for this application? Refering to teh literature, i know a working electrode is considered the respective electrode of investigation(here for example: cathode), reference electrode is the electrode already inserted in the same cell, is it counter electrode the anode electrode, then? I am still blare about purging the gases of N2 and O2 in cells during CV tests, may kindly explain about it? do we need to open the system and bring out the electrode for running CV tests, or can be done without disturbing system?
I do appreciate for any advice in this regard.
Hi Tahereh,
the informative publication of Falk Harnisch´ group should answer most of your question.
http://www.jove.com/video/50800/waste-water-derived-electroactive-microbial-biofilms-growth
Cheers,
Igor
It is better to execute CV measurement with out disturbing the system as much as possible. For electrochemical activity of bioanode always preferable to do CV with the anareobic environment of bioanode. How ever if you want to study the oxygen reduction activity of catode then purge O2 in cathode for a dual chambered MFC. Fir single chambered air cathode no need of O2 purging.
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