Table 2.

H₂ production and biomass formation by the co-culture on a mixture of glucose (5 g L^-1; 27.8 mM) and xylose (5 g L^-1; 33.3 mM) at steady states of different dilution rates (yeast extract, 1 g L^-1; pH 6.7; 70°C).

D (h-1)	$Y_{{\text{H}}_{\text{2}}}$[mol (mol C6)-1]	$Q_{{\text{H}}_{\text{2}}}$(mmol L-1 h-1)	$q_{{\text{H}}_2}$(mmol gCDW-1 h-1)	Biomass concentration (gCDW L-1)	Ysx [gCDW (mol C6)-1]	Residual sugar (mM)
						Glucose	Xylose
0.04	3.5	3.8	12.7	0.30	11.1	18.4	8.4
0.06	3.6	4.3	14.2	0.30	14.9	18.9	12.0
0.08	3.5	6.2	15.5	0.40	18.0	19.0	9.3
0.12	3.1	8.3	15.0	0.55	24.4	21.4	12.1
0.15	2.9	10.3	18.4	0.56	23.6	21.0	12.4
0.2	2.8	11.0	18.3	0.60	30.7	22.7	15.2
0.25	2.9	11.6	21.0	0.55	34.6	24.2	17.8
0.3	2.5	11.6	21.0	0.55	36.1	23.9	19.0