TABLE 4.

Dechlorination of trichlorobenzenes before and after supplementation with additional electron donors^a

Dichlorobenzene formationb 2 wk after inoculation	Additional electron donor injected 2 wk after inoculation	Dichlorobenzene formationb 5 wk after inoculation
0	None	0
0	Hydrogen	0
0	Formate	100 ± 0
0	Acetate	0
0	Pyruvate	61 ± 4.0

^aCultures were initially supplied with 10 mM pyruvate and 3 mM sulfate. 

^bMeans of at least duplicate cultures ± standard deviations, reported as a percentage of the total amount of chlorobenzenes.