The resistance to e_ transfer could be explained in terms of
polarization resistance (Rp). High Rp was observed on 30th day of
SBES operation. Higher the resistance in SBES, lower is the current
generated which indicated a reduced amount of metabolic functions
of the biocatalyst. SBES operation showed higher Rp on
30th day (272 O) followed by 0th day (202 O), 10th day (179 O)
and 20th day (102 O). It is evident from Rp values that SBES operation
was more favorable for effective electron transfer on 20th
day of operation. The observed lower Rp on 20th day of SBES operation
might be due to improved metabolic functions of the biocatalyst
and also rapid substrate oxidation/consumption by the
biocatalyst, which in turn lead to higher bioelectricity generation.