Abstract
The methane generation by coal biodegradation has been widely demonstrated in the laboratory. However, powder coal was mostly employed, and little is known about the methane production from coal in cube. A 2L fermenter was used here to perform the anaerobic degradation of lignite in cube by a fungi-methanogens mixed microflora. The results showed that the methane production reached 6578.51 μmol. After degradation, the contents of carbon, oxygen, hydrogen, and aromatic functional groups decreased in the inner part of residual coal (Inc) and reduced more in the outer part (ExC), suggesting that microorganisms can act inside the coal matrix although the action weakens. The specific surface area (SSA) and pore volume (PV) decreased in Inc but Increased in ExC due to the antagonistic effect of biodegradation and the retention of organics and microorganisms. Fermentative fungi and Methanosarcina dominated in fermentation broth where acids, especially fatty acids were the main intermediates. The results revealed that methane generation by biodegradation also happened inside coal matrix, laying a fundamental basis for the application of microbially enhanced coalbed methane. And further efforts are needed to enhance biodegradation to improve methane production and pore development.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
