Optimization of the Alkaline Pretreatment of Rice Straw for Enhanced Methane Yield

<table>pH value for each pretreatment of rice straw. (a) 4% Ca(OH)<sub>2</sub> pretreatment; (b) 8% Ca(OH)<sub>2</sub> pretreatment; (c) 12% Ca(OH)<sub>2</sub> pretreatment.</table>

BioMed Research International

fig3

Figure 3

Figure 3: Optimization of the Alkaline Pretreatment of Rice Straw for Enhanced Methane Yield 