3.4.3. Differential pulse voltammetry (DPV)
In the present study, whole-microorganism voltammetry was
used to evaluate the electrochemical behavior of the biocatalyst
(mixed consortia) during SBES operation. DPV is the most suitable
voltammetry technique for the biological system, which can monitor
redox species at small concentrations (Liu et al., 2003).
Although CV is the most informative method used to investigate
redox carriers involved in substrate oxidation by anodophilic
microorganism, it has low detection limit, and subtraction of
ohmic (capacitive) current is necessary to reveal minute details
(Velvizhi et al., 2012). Furthermore, the catalytic redox reactions
occurring at the electrodes comprise of complex e_ transfer chains
and to study such reaction mechanisms CV necessitates substantial