Enhanced biohydrogen production from corn straw by basalt fiber addition

6. Conclusion 
In this work, the effect of BF addition on hydrogen fermentation 
characteristics of corn straw was investigated. The hydrogen yield was 
obviously affected by BF dose and particle size. Compared to control 
group, H
2 
yield was increased up to 18.35% by BF addition. The 
maximum H
2 
yield observed was 323.94 mL at the dose of 1.5 g/L with 
particle size of 300
–
400 mesh. During the fermentation, the BF could 
improve organic acids distribution, which in turn accelerated hydrogen 
production. Our results indicated that BF creates a more favorable 
environment for photosynthetic bacteria.