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Table 2 The effects of various organic acids on the hydrogen production efficiencies

From: Feasibility of biohydrogen production from industrial wastes using defined microbial co-culture

Organic acids (1% w/v) H1 medium (mL/h -1 .L -1 ) H2 medium (mL/h -1 .L -1 ) Overall hydrogen production (%)
Controls 17.80 ± 1.51 15.90 ± 0.66 100.0
Acetic acid 6.20 ± 2.70 7.60 ± 1.60 40.95
Citric acid 18.0 ± 1.10 20.3 ± 1.02 113.65
Ethacetic acid 8.10 ± 3.12 8.0 ± 2.15 47.77
Lactic acid 19.0 ± 2.03 10.1 ± 1.02 86.35
Oxalic acid 12.0 ± 3.98 12 ± 1.25 71.22
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