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Table 7 The results of analysis of orthogonal experimental design

From: Strain screening and optimization of biohydrogen production by Enterobacter aerogenes EB-06 from glycerol fermentation

Calculation Glycerol concentration
(g/L) [A]
pH
[B]
C/N ratio (g/g)
[C]
K1 2.54 2.97 2.64
K2 2.61 2.41 2.89
K3 3.06 2.83 2.68
k 1 0.85 0.99 0.88
k 2 0.87 0.80 0.96
k 3 1.02 0.94 0.89
R 0.17 0.19 0.08
Primary and secondary order B > A > C
Optimal levels A2 B1 C2
Optimal combination 10 g/L, pH5.0, C/N 5/3