TABLE 1.

Effect of electron donor on Tc reduction and removal by resting cells of D. desulfuricans^a

Electron donor	CR
Hydrogen	12,850
Formate	11,648
Pyruvate	6,393
Lactate	2,940
Ethanol	1,093
Succinate	363
Glycerol	336
Acetate	197
Methanol	101

^aResults are expressed as the CR, calculated after 24 h of incubation at 30°C.