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Feng X, Zhang P, Zhang Z, Guo H, Li Z, Huang Z, Urynowicz M, Ali MI. The effect of organics transformation and migration on pore structure of bituminous coal and lignite during biomethane production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27945-8. [PMID: 37335506 DOI: 10.1007/s11356-023-27945-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 05/23/2023] [Indexed: 06/21/2023]
Abstract
Biomethane generation by coal degradation not only can increase coalbed methane (CBM) reserves, namely, microbially enhanced coalbed methane (MECBM), but also has a significant effect on the pore structure of coal which is the key factor in CBM extraction. The transformation and migration of organics in coal are essential to pore development under the action of microorganisms. Here, the biodegradation of bituminous coal and lignite to produce methane and the cultivation with inhibition of methanogenic activity by 2-bromoethanesulfonate (BES) were performed to analyze the effect of biodegradation on coal pore development by determining the changes of the pore structure and the organics in culture solution and coal. The results showed that the maximum methane productions from bituminous coal and lignite were 117.69 μmol/g and 166.55 μmol/g, respectively. Biodegradation mainly affected the development of micropore whose specific surface area (SSA) and pore volume (PV) decreased while the fractal dimension increased. After biodegradation, various organics were generated which were partly released into culture solution while a large number of them remained in residual coal. The content of newly generated heterocyclic organics and oxygen-containing aromatics in bituminous coal was 11.21% and 20.21%. And the content of heterocyclic organics in bituminous coal was negatively correlated with SSA and PV but positively correlated with the fractal dimension which suggested that the retention of organics contributed greatly to the decrease of pore development. But the retention effect on pore structure was relatively poor in lignite. Besides, microorganisms were observed around fissures in both coal samples after biodegradation which would not be conducive to the porosity of coal on the micron scale. These results revealed that the effect of biodegradation on pore development of coal was governed by the combined action of organics degradation to produce methane and organics retention in coal whose contributions were antagonistic and determined by coal rank and pore aperture. The better development of MECBM needs to enhance organics biodegradation and reduce organics retention in coal.
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Affiliation(s)
- Xiao Feng
- College of Safety and Emergency Management and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of In-Situ Property-Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Panpan Zhang
- College of Safety and Emergency Management and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of In-Situ Property-Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Zizhong Zhang
- College of Safety and Emergency Management and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of In-Situ Property-Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Hongguang Guo
- College of Safety and Emergency Management and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
- Key Laboratory of In-Situ Property-Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China.
| | - Zhigang Li
- College of Safety and Emergency Management and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of In-Situ Property-Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Zaixing Huang
- School of Chemical Engineering Technology, China University of Mining and Technology, Xuzhou, 221116, China
| | - Michael Urynowicz
- Department of Civil & Architectural Engineering, University of Wyoming, Laramie, WY, 82071, USA
| | - Muhammad Ishtiaq Ali
- Environmental Microbiology Lab, Department of Microbiology, Quaid-I-Azam University, Islamabad, 45320, Pakistan
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McKay LJ, Smith HJ, Barnhart EP, Schweitzer HD, Malmstrom RR, Goudeau D, Fields MW. Activity-based, genome-resolved metagenomics uncovers key populations and pathways involved in subsurface conversions of coal to methane. THE ISME JOURNAL 2022; 16:915-926. [PMID: 34689183 PMCID: PMC8941128 DOI: 10.1038/s41396-021-01139-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 09/28/2021] [Accepted: 10/04/2021] [Indexed: 11/08/2022]
Abstract
Microbial metabolisms and interactions that facilitate subsurface conversions of recalcitrant carbon to methane are poorly understood. We deployed an in situ enrichment device in a subsurface coal seam in the Powder River Basin (PRB), USA, and used BONCAT-FACS-Metagenomics to identify translationally active populations involved in methane generation from a variety of coal-derived aromatic hydrocarbons. From the active fraction, high-quality metagenome-assembled genomes (MAGs) were recovered for the acetoclastic methanogen, Methanothrix paradoxum, and a novel member of the Chlorobi with the potential to generate acetate via the Pta-Ack pathway. Members of the Bacteroides and Geobacter also encoded Pta-Ack and together, all four populations had the putative ability to degrade ethylbenzene, phenylphosphate, phenylethanol, toluene, xylene, and phenol. Metabolic reconstructions, gene analyses, and environmental parameters also indicated that redox fluctuations likely promote facultative energy metabolisms in the coal seam. The active "Chlorobi PRB" MAG encoded enzymes for fermentation, nitrate reduction, and multiple oxygenases with varying binding affinities for oxygen. "M. paradoxum PRB" encoded an extradiol dioxygenase for aerobic phenylacetate degradation, which was also present in previously published Methanothrix genomes. These observations outline underlying processes for bio-methane from subbituminous coal by translationally active populations and demonstrate activity-based metagenomics as a powerful strategy in next generation physiology to understand ecologically relevant microbial populations.
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Affiliation(s)
- Luke J McKay
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, 59717, USA.
- Thermal Biology Institute, Montana State University, Bozeman, MT, 59717, USA.
- Department of Land Resources & Environmental Sciences, Montana State University, Bozeman, MT, 59717, USA.
| | - Heidi J Smith
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, 59717, USA.
- Department of Microbiology & Cell Biology, Montana State University, Bozeman, MT, 59717, USA.
| | - Elliott P Barnhart
- U.S. Geological Survey, Wyoming-Montana Water Science Center, Helena, MT, 59601, USA
| | - Hannah D Schweitzer
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, 59717, USA
- Department of Microbiology & Cell Biology, Montana State University, Bozeman, MT, 59717, USA
- Arctic University of Norway, Tromsø, Norway
| | | | | | - Matthew W Fields
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, 59717, USA.
- Department of Microbiology & Cell Biology, Montana State University, Bozeman, MT, 59717, USA.
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Fu J, Jin C, Zhang J, Wang Z, Wang T, Cheng X, Ma C, Chen H. Pore structure and VOCs adsorption characteristics of activated coke powders derived via one‐step rapid pyrolysis activation method. ASIA-PAC J CHEM ENG 2020. [DOI: 10.1002/apj.2503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jiapeng Fu
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology, Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering Shandong University Jinan China
| | - Chunjiang Jin
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology, Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering Shandong University Jinan China
- Department of Physics, Changji University Xinjiang China
| | - Jingru Zhang
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology, Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering Shandong University Jinan China
| | - Zhiqiang Wang
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology, Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering Shandong University Jinan China
| | - Tao Wang
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology, Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering Shandong University Jinan China
| | - Xingxing Cheng
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology, Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering Shandong University Jinan China
| | - Chunyuan Ma
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology, Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering Shandong University Jinan China
| | - Huimin Chen
- Department of Physics, Changji University Xinjiang China
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