INFLUENCE OF BIOCHAR AND LIGNITE ON METHANE PRODUCTION OF CHARATERISTICS OF ANAEROBIC DIGESTION OF WHEAT STRAW

Hu Chuanyi; Xin Ya; Li Jie; Wang Dianlong; Qian Yuhan; Zou Chu

doi:10.19912/j.0254-0096.tynxb.2024-0625

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 184-189. DOI: 10.19912/j.0254-0096.tynxb.2024-0625

INFLUENCE OF BIOCHAR AND LIGNITE ON METHANE PRODUCTION OF CHARATERISTICS OF ANAEROBIC DIGESTION OF WHEAT STRAW

Hu Chuanyi, Xin Ya, Li Jie, Wang Dianlong, Qian Yuhan, Zou Chu

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Abstract

The anaerobic digestion （AD） of wheat straw with biochar and lignite addition was studied. The effects of biochar and lignite addition on biogas yield, cellulose and hemicellulose degradation, and the structure of bacteria and archaea in AD were explored. The results indicate that biochar and lignite can promote biogas yield and cellulose and hemicellulose degradation during AD of wheat straw. The lignite group is better than the biochar group, with biogas yield increasing by 16.8% and 20.4%, respectively, compared to the control. For the lignite experimental group, the biogas yield and average methane content are 327.0 mL/g and 61.5%, respectively. Regarding cellulose and hemicellulose degradation, after the addition of biochar and lignite, cellulose content decreases from 18.32% to 12.50%-13.69%, and hemicellulose content further decreases from 9.81% to 6.52%-7.95%. Microbial community analysis show that biochar and lignite have little effect on bacteria, while the use of lignite as an additive enriches the archaeal community and metabolic pathways. This study reveals the mechanism by which biochar and lignite improve the biogas yield of wheat straw.

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straw / anaerobic digestion / biogas / biochar / lignite

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Hu Chuanyi, Xin Ya, Li Jie, Wang Dianlong, Qian Yuhan, Zou Chu. INFLUENCE OF BIOCHAR AND LIGNITE ON METHANE PRODUCTION OF CHARATERISTICS OF ANAEROBIC DIGESTION OF WHEAT STRAW[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 184-189 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0625

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