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2 High-Efficient Anaerobic Fermentation Technology of Organic …
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Cumulative biogas production(mL)
Control
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Alkali
Enzyme
Hydrogen propotion (%)
Time (h)
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Cumulative biogas production(mL)
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Methane propotion (%)
Time (h)
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Fig. 2.10 The cumulative biogas production and proportion in response to different treatments
a hydrogenogenic stage and b methanogenic stage