TABLE 1.

Biofilm thickness, dry weight, CFU count, and density data after approximately 300 h of growth at various carbon loading rates^a

Carbon loading rate (mM/h)	Initial reactor fluoroacetate concn (mM)	Reactor section no.	Thickness (μm)	Dry wt (g/40-cm section)	CFU/40-cm section	Density (g/liter)
0.000	10	4	12	0.0000	1.12 × 109	0.00
0.000	10	3	22	0.0016	6.48 × 109	18.5
0.000	20	4	29	0.0120	6.20 × 109	108
0.007	20	4	32	0.0128	1.68 × 109	80.0
0.017	10	2	150	0.0952	4.40 × 1010	169
0.036	20	3	92	0.0624	1.91 × 1010	181
0.036	20	3	85	0.0496	1.52 × 1010	154
0.080	20	2	95	0.0728	8.81 × 109	202
0.081	20	2	136	0.0656	2.72 × 1010	128
0.107	10	1	281	0.0696	4.56 × 1010	65.0
0.168	20	1	120	0.0720	1.92 × 1010	159
0.187	20	1	120	0.0872	1.36 × 1010	192
0.304	50	4	134	0.0552	6.16 × 109	108
0.362	50	3	147	0.0768	4.40 × 109	138
0.412	50	2	96	0.0728	1.12 × 1010	201
0.509	50	1	110	0.0648	1.92 × 1010	156

^aCarbon loading rates are used here and not fluoroacetate loading rates to take into account that some sections of the reactors have both fluoroacetate and glycolate in the inlet feed.