TABLE 5.

m_E determined for different anaerobic monocultures and cocultures grown under different conditions using the measured m_s and the ΔG_av⁰¹ of the overall catabolic reaction

Microorganism	Temp (°C)	Substrate	ΔGav01 (kJ e-mol−1)	γD	mD (mol of [C] mol of C−1 h−1)	mE (kJ mol of C−1 h−1)	Reference(s)
S. fumaroxidans cocultured with M. hungatei
Flushed chemostat	37	Propionate	1.86a	4.67	0.023	0.20	This study
Nonflushed chemostat	37	Propionate	1.86a	4.67	0.016	0.14	This study
P. acetylenicus cocultured with H2 oxidizer:
Acetobacterium woodii	28	Ethanol	3.54b	6	0.100	2.12	30, 31
Methanobacterium bryantii	28	Ethanol	4.87c	6	0.063	1.84	30, 31
Desulfovibrio desulfuricans	28	Ethanol	5.56d	6	0.038	1.27	30, 31
Pure-culture studies
Desulfovibrio propionicus	28	Ethanol	5.56d	6	0.047	1.56	35
Desulfovibrio vulgaris Marburg	28	Ethanol	5.56d	6	0.224	7.47	35
Pelobacter propionicus	28	Ethanol	3.48e	6	0.078	1.63	35
Acetobacterium carbinolicum	28	Ethanol	3.54b	6	0.172	3.65	35
Acetobacterium woodii	30	Lactate	4.67f	4	0.006	0.12	23
Acetobacterium woodii	30	H2	12.7g	2	0.042	1.06	23

^aReaction 3 in Table 1. 

^bReaction: 2CH₃CH₂OH + 2HCO₃⁻ → 3CH₃COO⁻ + H⁺ + 2H₂O. 

^cReaction: 2CH₃CH₂OH + HCO₃⁻ → 2CH₃COO⁻ + H⁺ + CH₄ + H₂O. 

^dReaction: 2CH₃CH₂OH + SO₄²⁻ → 2CH₃COO⁻ + H⁺ + HS⁻ + 2H₂O. 

^eReaction: 8CH₃CH₂OH + 6HCO₃⁻ → 5CH₃COO⁻ + 4CH₃CH₂COO⁻ + 3H⁺ + 8H₂O. 

^fReaction: CH₃CH₂OCOO⁻ → 1.5CH₃COO⁻ + 0.5H⁺. 

^gReaction: 4H₂ + 2HCO₃⁻ + H⁺ → CH₃COO⁻ + 4H₂O.