EE/O was calculated using the following equation:
EE/O=(Pelec*t*1000)/(V*60*log(ci/cf))
where Pelec is the input power (kW) of the electric device, V is the reactor volume (L) of water treated, Ci and Cf are the initial and final concentrations (mg/L) of contaminant, respectively, and t (min) is the time required to achieve a 90% (t0.9) degradation of contaminant.
t0.9=2.3035851/k
k= The degradation rate constant (k, min-1)