首页|Evaluating the efficiency of the enhanced ultrasonic–assisted hydrogen peroxide degradation of low–rank coal biogenic gas
Evaluating the efficiency of the enhanced ultrasonic–assisted hydrogen peroxide degradation of low–rank coal biogenic gas
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NETL
NSTL
Taylor & Francis
The efficiency of biogas formation from low-rank coal was improved throughultrasonic-assisted hydrogen peroxide degradation. We investigated variousaspects of this process, including the mass of the small-molecule organicmatter, changes in the composition of biogas components in three systems,and alterations in the microscopic morphology of coal before and afterbiogas formation. Our analytical methods included UV-vis spectrophotometry,drainage gas collection method, gas chromatography, infrared spectroscopy,and scanning electron microscopy. Optimal pretreatment conditionswere identified with an ultrasonic power of 400 W, a reaction time of 90 min,and a reaction temperature of 60℃. The biogenic methanogenic cycle wasdelineated into three stages, with the raw coal and filtrate systems exhibitingfast and slow gas production stages during the first and second stages,respectively. In contrast, the residual coal system displayed slow and fastgas production stages during these stages. Methane yields were measured at270.72 μmol g~(−1) (raw coal), 303.50 μmol g~(−1) (residual coal), and 293.43 μmolg~(−1) (filtrate). Pretreated coal exhibited biomethane yields (residual coal andfiltrate) approximately 120% higher than untreated raw coal. Notably, thegas-forming potential of the filtrate should not be underestimated.Ultrasonic-assisted hydrogen peroxide pretreatment disrupted the macromolecularreticulation structure within the raw coal, resulting in the openingof a portion of the aromatic ring structure. This innovative approach offersa novel strategy for augmenting biomethane production from low-rank coaland furnishes a scientific foundation for advancing industrial applications.
Baihui Song、Li Wu、Huaizhen Li、Xiaolin Li、Mengyuan Lai
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School of Resources and Environment, Henan Polytechnic University, Jiaozuo, China
School of Resources and Environment, Henan Polytechnic University, Jiaozuo, China,Collaborative Innovation Center for Coal-Bed Methane and Shale Gas of Henan, Henan Polytechnic University, Jiaozuo, China
Institute of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, China
NETL
NSTL
Taylor & Francis
