The Treatment of PPCP-Containing Sewage in an Anoxic/Aerobic Reactor Coupled with a Novel Design of Solid Plain Graphite-Plates Microbial Fuel Cell

Table 4

The richness index (RI) on the 109th day of Phase II obtained from the DGGE profiles allows assessments of the variation in biodiversity across the various areas of the novel MFC A/O system.

Same bands^1/different bands^2 (difference ratio^3)		Anoxic reactor (anode)
		MLSS	SPGRP biofilm	PEM biofilm
Aerobic reactor (cathode)	MLSS	3/18 (85.71%)	7/16 (69.56%)	7/13 (65.00%)
	SPGRP biofilm	7/15 (68.18%)	3/19 (86.36%)	4/16 (80.00%)
	PEM biofilm	5/13 (72.22%)	3/20 (86.96%)	3/18 (85.71%)

¹Same bands are defined as the same location on the DGGE profile in Figure 3.
²Different bands are defined as the total number of different bands obtained when comparing each of two samples.
³The difference ratio is defined as the ratio of the number of different bands to all bands present.