Biogas productivity by co-digesting Taihu blue algae with corn straw as an external carbon source
2012
Zhong, Weizhang | Zhang, Zhongzhi | Luo, Yijing | Qiao, Wei | Xiao, Meng | Zhang, Min
A batch anaerobic test was conducted to evaluate the effects of adding high carbon content of corn straw to the digestion of Taihu blue algae to attain an optimal C/N ratio for higher methane yield. The addition of corn straw in algae at a C/N ratio of 20/1 increased methane yield by 61.69% at 325mLg⁻¹VS⁻¹ (compared with 201mLg⁻¹VS⁻¹ of algae digestion alone), followed by C/N ratios of 16/1 and 25/1, all operated at 20gVSL⁻¹ and 35°C. The results suggest the optimal C/N ratio for co-digestion of algae with corn straw is 20/1. The findings could offer options for efficient methane production and waste treatment.
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