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- W3204322088 abstract "Abstract High rank coal, such as anthracite, has been considered difficult to generate biogas because of the high coalification degree. Selecting anthracite from Sihe coal mine, Qinshui basin, China, as substrate, this study carried out a simulation experiment of biogas generation for 80 days, the purpose of which was to verify whether anthracite could be bio-degraded to produce biogas under laboratory conditions. The results showed that the selected anthracite can be utilized by methanogenic bacteria to produce biogas and the approximate production field was 1.79mL/g, which was less than that of lower rank coal of other published studies. The generation process can be divided into a rapid growth stage (0-30d) and a slow descent stage (30-80d). CO 2 and CH 4 are the main components of biogas, although some heavy-hydrocarbons were also tested. The CO 2 concentrations were low (<30%) and the δ13C-CH 4 values were positive (-39.9‰ to -45.8‰), which suggested that the main biogas generation pathway was acetic fermentation. But at the same time, the concentrations of CH4 and CO 2 were mutually increasing and decreasing with the passage of experiment time, and δ13C-CH 4 tends to be lighten in the later stage(40-80d), suggesting that parts of biogenic CH 4 was generated by way of CO 2 -reduction." @default.
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- W3204322088 date "2021-09-28" @default.
- W3204322088 modified "2023-09-27" @default.
- W3204322088 title "Simulation of Biogenic Coalbed Gas from Anthracite in South of Qinshui Basin, China" @default.
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- W3204322088 doi "https://doi.org/10.21203/rs.3.rs-927152/v1" @default.
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