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Tao Xing
Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China

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Journal article
Published: 16 April 2021 in Energies
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Anaerobic digestion with corn straw faces the problems of difficult degradation, long fermentation time and acid accumulation in the high concentration of feedstocks. In order to speed up the process of methane production, corn straw treated with sodium hydroxide was used in thermophilic (50 °C) anaerobic digestion, and the effects of biochar addition on the performance of methane production and the microbial community were analyzed. The results showed that the cumulative methane production of all treatment groups reached over 75% of the theoretical methane yield in 7 days and the addition of 4% biochar increased the cumulative methane production by 6.75% compared to the control group. The addition of biochar also decreased the number of biogas and methane production peaks from 2 to 1, and had a positive effect on shortening the digestion start-up period and reducing the fluctuation of biogas production during the digestion process. The addition of 4% biochar increased the abundance of the bacterial family Peptococcaceae throughout the digestion period, promoting the hydrolysis rate of corn straw. The dominant archaeal genus Methanosarcina was significantly more abundant at the peak stage and the end of methane production with 4% biochar added compared to the control group.

ACS Style

Zhi Wang; Ying Guo; Weiwei Wang; Liumeng Chen; Yongming Sun; Tao Xing; Xiaoying Kong. Effect of Biochar Addition on the Microbial Community and Methane Production in the Rapid Degradation Process of Corn Straw. Energies 2021, 14, 2223 .

AMA Style

Zhi Wang, Ying Guo, Weiwei Wang, Liumeng Chen, Yongming Sun, Tao Xing, Xiaoying Kong. Effect of Biochar Addition on the Microbial Community and Methane Production in the Rapid Degradation Process of Corn Straw. Energies. 2021; 14 (8):2223.

Chicago/Turabian Style

Zhi Wang; Ying Guo; Weiwei Wang; Liumeng Chen; Yongming Sun; Tao Xing; Xiaoying Kong. 2021. "Effect of Biochar Addition on the Microbial Community and Methane Production in the Rapid Degradation Process of Corn Straw." Energies 14, no. 8: 2223.

Journal article
Published: 17 April 2018 in Energies
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Mesophilic and thermophilic anaerobic digestion reactors (MR and TR) for the organic fraction of municipal solid waste (OFMSW) were tested to reveal the differential microbial responses to increasing organic loading rate (OLR). MR exhibited faster adaptation and better performance at an OLR range of 1.0–2.5 g VS·L−1·d−1, with average profiles of a biogas yield of 0.38 L/gVSadded*d at 0.5 g/L*d OLR and 0.69 L/gVSadded*d at 2.5 g/L*d OLR, whereas TR had a biogas yield of 0.07 L/gVSadded*d at 0.5 g/L*d OLR and 0.44 L/gVSadded*d at 2.5 g/L*d OLR. The pyrosequencing results of amplicons revealed the microbial mechanisms of OFMSW anaerobic digestion. Larger shifts in the bacteria composition were observed in the TR with OLR elevation. For methanogens in both reactors, Methanothrix dominated in the MR while Methanosarcina was favored in the TR. Moreover, analysis of the mode and efficiency of metabolism between the MR and TR demonstrated different performances with more efficiency related to the limiting hydrolytic acid step.

ACS Style

Yiming Gao; Xiaoying Kong; Tao Xing; Yongming Sun; Yi Zhang; Xingjian Luo; Yong Sun. Digestion Performance and Microbial Metabolic Mechanism in Thermophilic and Mesophilic Anaerobic Digesters Exposed to Elevated Loadings of Organic Fraction of Municipal Solid Waste. Energies 2018, 11, 952 .

AMA Style

Yiming Gao, Xiaoying Kong, Tao Xing, Yongming Sun, Yi Zhang, Xingjian Luo, Yong Sun. Digestion Performance and Microbial Metabolic Mechanism in Thermophilic and Mesophilic Anaerobic Digesters Exposed to Elevated Loadings of Organic Fraction of Municipal Solid Waste. Energies. 2018; 11 (4):952.

Chicago/Turabian Style

Yiming Gao; Xiaoying Kong; Tao Xing; Yongming Sun; Yi Zhang; Xingjian Luo; Yong Sun. 2018. "Digestion Performance and Microbial Metabolic Mechanism in Thermophilic and Mesophilic Anaerobic Digesters Exposed to Elevated Loadings of Organic Fraction of Municipal Solid Waste." Energies 11, no. 4: 952.