http://orcid.org/0000-0003-2890-2180Figure 1. The cellular concentration and substrate consumption of Clostridium acetobutylicum.
Figure 2. The cellular concentration and substrate consumption of Clostridium butyricum.
Table 1. The amounts of substrate consumed after 48 hours of fermentation.
Figure 3. The hydrogen production of C. acetobutylicum (left) and C. butyricum (right).
Table 2. The soluble metabolites produced during the fermentation process.
Table 3. The yields and productivities of hydrogen generation.
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