Tourmaline enhanced methane yield via regulating microbial metabolic balance during anaerobic co-digestion of corn stover and cow manure,Bioresource Technology

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Tourmaline enhanced methane yield via regulating microbial metabolic balance during anaerobic co-digestion of corn stover and cow manure
Bioresource Technology ( IF 9.7 ) Pub Date : 2022-06-14 , DOI: 10.1016/j.biortech.2022.127470
Qing Wang ₁ , Hao Sha ₁ , Shengxian Cao ₂ , Bo Zhao ₂ , Gong Wang ₂ , Pengfei Zheng ₂

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This work performed a pilot-scale study on the effects of the substrate ratio, the concentration of tourmaline (Tur), and its high-temperature thermally modified (HTM) material on the anaerobic co-digestion of corn stover (CS) and cow manure (CM). The experimental results showed that the CH yield was higher at a corn stover -to- cow manure feeding ratio of 2:1. The cumulative CH yield increased by 22.76% and 8.31% at a concentration of tourmaline of 2.0 g/L and a tourmaline treatment temperature of 400 °C respectively. Microbial diversity analysis revealed that adding low doses of tourmaline regulated the distribution of microorganisms and that became the dominant methanogenic archaea in the fermentation broth. This work clarified the effect of the concentration of tourmaline on gas production by anaerobic co-digestion from the perspective of the microbial metabolic balance and suggested the possibility of its application on a larger scale.

中文翻译：

电气石通过调节玉米秸秆和牛粪厌氧共消化过程中的微生物代谢平衡来提高甲烷产量

本工作针对底物配比、电气石（Tur）浓度及其高温热改性（HTM）材料对玉米秸秆（CS）和牛粪厌氧共消化的影响进行了中试研究（厘米）。实验结果表明，玉米秸秆与牛粪的饲喂比例为2:1时CH产量较高。当电气石浓度为2.0 g/L、电气石处理温度为400 ℃时，累积CH产率分别增加了22.76%和8.31%。微生物多样性分析表明，添加低剂量的电气石调节了微生物的分布，并成为发酵液中的主要产甲烷古菌。该工作从微生物代谢平衡的角度阐明了电气石浓度对厌氧共消化产气的影响，并提出了其更大规模应用的可能性。

更新日期：2022-06-14

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