Comparative Study of Various E. coli Strains for Biohydrogen Production Applying Response Surface Methodology

Table 4

The statistically determined optimum conditions for hydrogen production.

	pH	Formate conc. (g/L)	Yield (mol H2/mol formate)
E. coli (XL1-BLUE)	6.4	1.3	0.42
E. coli (DJT 135)	6.5	1.25	0.63