Table 5.

Outcomes of POME composition after 24 h of batch fermentation.

POME composition	Hydrolyzed POME*	Pre-settled POME*
Hydrogen cumulative volume (ml H2.L-1 POME)	302.78 ± 13.57	13.38 ± 3.36
Hydrogen productivity (ml H2.L-1 POME h-1)	12.62 ± 0.57	0.56 ± 0.14
Percentage of hydrogen, H2 (%)	83.52 ± 2.37	36.35 ± 8.17
Percentage of carbon dioxide, CO2 (%)	16.48 ± 2.37	63.65 ± 8.17
Hydrogen volume (ml)	24.22 ± 1.09	1.07 ± 0.27
Hydrogen production rate (ml H2.h-1)	1.01 ± 0.05	0.04 ± 0.01

*Values represent means of three replicate samples.