Article
Engineering, Environmental
Elliott P. Barnhart, Leslie F. Ruppert, Randy Hiebert, Heidi J. Smith, Hannah D. Schweitzer, Arthur C. Clark, Edwin P. Weeks, William H. Orem, Matthew S. Varonka, George Platt, Jenna L. Shelton, Katherine J. Davis, Robert J. Hyatt, Jennifer C. McIntosh, Kilian Ashley, Shuhei Ono, Anna M. Martini, Keith C. Hackley, Robin Gerlach, Lee Spangler, Adrienne J. Phillips, Mark Barry, Alfred B. Cunningham, Matthew W. Fields
Summary: Research has found that complex carbon-containing nutrients can stimulate methane production in coal beds, which has significant implications for understanding biogenic methane production and the formation of methane from underground carbon.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Haijiao Fu, Yueguo Li, Xianbo Su, Detian Yan, Shuguang Yang, Gang Wang, Xiaoming Wang, Weizhong Zhao
Summary: This study collected and analyzed gas and water samples from coalbed methane (CBM) exploitation wells and in situ coal samples in the Miquan region of NW China. The results showed that the efficiency of converting coal into methane by existing microbes in the coalbed water was low under approximate in situ conditions, confirming the limited or no supply of current microbial gas. Stable isotope compositions indicated that carbon dioxide reduction was the dominant pathway for CBM generation, and the methanogens in the area were a mixture of aceticlastic and methylotrophic methanogens. Nutrients for the microbes mainly included total dissolved nitrogen and total dissolved carbon, with in situ dissolution of the coals being a significant nitrogen source and surface water supplying the majority of dissolved carbon. Environmental factors in different tectonic settings significantly influenced microbial communities, and the stagnation of the water environment led to increased salinity and decreased nutrients, restricting microbial methanogenesis under in situ conditions. Combined with the rate-limiting stages of anaerobic fermentation, the mechanisms restricting microbial methanogenesis in the Miquan region can be determined.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Geosciences, Multidisciplinary
Kang Yang, Wei Li, Lin Gao, Haifeng Wang, Jinzhao Liu, Jia Lin
Summary: A model of coalbed methane enrichment and extraction in abandoned mine gobs was established to study the migration law and seepage characteristics of CBM. It was found that during mine closure, CBM pressure gradually recovers and is positively correlated with the matrix pressure and diffusion coefficient of coal seam. Residual coal in the gob is the dominant source of CBM seepage during extraction, and the layout of surface wells, negative extraction pressure, and extraction time can affect CBM production and recovery.
NATURAL RESOURCES RESEARCH
(2023)
Article
Energy & Fuels
Lan Hoang, Thi Thuy Phung, Michael Urynowicz, Kim Anh To, Quoc Hung Le, Zaixing Huang, Hong Thanh Lai, Qiurong Wang, Rizwan Haider, Lan Huong Nguyen
Summary: The study provides quantitative data on coal samples, microbial communities, and biogenic methane potential in coal mines in the Red River Basin, Vietnam. Bacterial communities dominate over archaea in formation water, with Proteobacteria being the most abundant phylum. The methane production potential from coal through biotransformation is significant, showing the importance of indigenous microbial consortia in this process.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Review
Microbiology
Run Chen, Yunxia Bao, Yajun Zhang
Summary: Biogenic coalbed methane (CBM) is a significant alternative energy source for achieving carbon neutrality. This review summarizes the recent progress in detection technologies and experimental research on biogenic CBM in China. Factors influencing biogenic CBM generation and identification methods are analyzed. Detection technologies for biogas and research methods for microbial diversity are summarized. The review highlights the conditions favoring biogenic CBM production and the three aspects to identify biogenic CBM. The dominant bacterial phyla and archaeal fractions in various basins in China are determined. The review aims to promote the development of coal biotransformation and CO2 bio-utilization to meet energy demands under carbon neutrality.
Article
Environmental Sciences
Kimberley A. Taylor, David Risk, James P. Williams, Grant D. Wach, Owen A. Sherwood
Summary: This study investigated the presence of methane in groundwater in the Stellarton Basin, Nova Scotia, Canada, finding that the majority of methane is of microbial origin, with some trace thermogenic gas likely originating from coal mines in the area. The data obtained in this study may be used as baseline information for future coal-bed methane operations in the region.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Li Chen, Xinxin Sui, Rongyuan Liu, Hong Chen, Yu Li, Xian Zhang, Haomin Chen
Summary: This study investigates the application of hyperspectral data in CBM enrichment areas and proposes a method for mineral extraction based on spectral feature matching and diagnostic characteristic parameters. The extraction results are verified through X-ray diffraction analysis, and it is found that both ZY-1 02D and Hyperion hyperspectral data yield favorable extraction results for clay and carbonate minerals, with the higher accuracy of ZY-1 02D data.
Article
Energy & Fuels
Zhigang Li, Jiaqi Cheng, Kaixin Duan, Yatong Cheng, Hongguang Guo, Zaixing Huang, Michael Urynowicz, Muhammad Ishtiaq Ali
Summary: The co-degradation of coal and straw can significantly improve methane production, potentially increasing biogenic coalbed methane (CBM) production. The microbial communities and organic compounds in the process of methane generation from co-degradation were studied. The results showed that methane production was significantly higher in the culture with coal-rice straw (CRS) compared to coal (C) alone. The dominant methanogen shifted during co-degradation, and the structures of bacteria and fungi also changed significantly. The addition of rice straw altered the metabolic pathway and methanogenesis in co-degradation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Shuji Tamamura, Takuma Murakami, Akio Ueno, Satoshi Tamazawa, Tamotsu Kiyama, Hidenori Inomata, Hiroyuki Matsumoto, Kagemi Uchida, Yoshiaki Suzuki, Jun Aizawa, Katsuhiko Kaneko
Summary: Isotopic analysis of rocks and sedimentary rocks from the Kushiro Coal Mine in Japan reveals the presence of thermogenic methane in some closed pores.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Baoxin Zhang, Ze Deng, Xuehai Fu, Ke Yin
Summary: The study explored the distribution characteristics of coalbed methane and water in the Fukang mining area of Xinjiang, China. It found that the average daily water production and average daily gas production of CBM wells show a negative correlation, with high gas-producing wells mainly located in high areas of the structure.
Article
Environmental Sciences
Yue Cao, Huan He, Di Zhan, Hua-Zhou Huang, Yong Zhang, Bo Fu, Zhi-Min Xu, Muhammad Ishtiaq Ali, Fang-Jing Liu, Xiu-Xiang Tao, Huang Zaixing
Summary: Research has shown that enhancing coalbed methane (CBM) production can be achieved by adding microbes or stimulating indigenous microbes within coalbeds. However, the application of single purified microbes has not received much attention. In this study, an acetogenic bacterium, Clostridium sp., was used to treat Tiefa anthracite from Liaoning Province, China. The results showed that this bacterium could change the physical properties of the coal by increasing its permeability and porosity, offering a potential alternative method for in situ coalbed methane development in the future.
GEOMICROBIOLOGY JOURNAL
(2023)
Article
Energy & Fuels
Lunru Yan, Kaiyi Gong, Hongguang Guo, Yixuan Zhang, Zaixing Huang, Michael Urynowicz
Summary: The production of methane from coal through biodegradation has been widely demonstrated in lab experiments. However, there is limited knowledge about methane production from coal in cube form. This study used a 2L fermenter to degrade lignite in cube form using a mixed microflora of fungi and methanogens. The results showed significant methane production, indicating that biodegradation can also occur inside the coal matrix. The findings provide a fundamental basis for the application of microbially enhanced coalbed methane, but further research is needed to enhance biodegradation and improve methane production and pore development.
Article
Chemistry, Physical
Xiao Feng, Zizhong Zhang, Hongguang Guo, Zhigang Li, Zaixing Huang, Michael Urynowicz
Summary: Supercritical CO2 (ScCO2) extraction can enhance the bioavailability of coal for biogenic methane production. The study investigated the impact of prolonged ScCO2 extraction on methane yield, as in-situ ScCO2 injection is time-consuming. Results showed that longer extraction time and higher extraction yield decreased the enhancement of biomethane production. A conceptual model of ScCO2-MECBM was proposed for enhancing methane recovery in-situ.
JOURNAL OF SUPERCRITICAL FLUIDS
(2023)
Article
Engineering, Chemical
Bo Lu, Yuanhui Shen, Zhongli Tang, Donghui Zhang, Gaofei Chen
Summary: This study investigates the enrichment of low concentration coalbed methane using activated carbon adsorbent, proposing a mathematical model for numerical modeling and simulation of adsorption processes. A novel six bed VPSA process is developed to enrich methane molar fraction in feed mixture, showing high methane recovery and energy efficiency. Additionally, a dual-stage VPSA process is successfully developed to upgrade low concentration coalbed methane to a target product gas with high methane purity and total methane recovery.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Chao Li, Yong Qin, Tao Guo, Jian Shen, Yi Yang
Summary: This study measured the high-pressure adsorption isotherms of two coal samples to investigate the methane adsorption process and mechanisms in coal. The results showed that micropore filling and surface adsorption are the primary adsorption mechanisms for supercritical methane in coal, with micropore filling occurring in pores smaller than 1.1 nm and surface adsorption occurring in 1-2 nm pores. Micropore filling adsorption plays a significant role in the overall methane adsorption, and the nano-confined effect and low water saturation contribute to the enrichment of free gas in deep coalbed methane (CBM). These findings provide insights into the occurrence behavior of unconventional natural gas in reservoirs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Nicholas Arkell, Petr Kuznetsov, Alsu Kuznetsova, Julia M. Foght, Tariq Siddique
JOURNAL OF ENVIRONMENTAL QUALITY
(2015)
Article
Environmental Sciences
Petr Kuznetsov, Alsu Kuznetsova, Julia M. Foght, Tariq Siddique
SCIENCE OF THE TOTAL ENVIRONMENT
(2015)
Article
Biotechnology & Applied Microbiology
S. L. Wilson, C. Li, E. Ramos-Padron, C. Nesbo, J. Soh, C. W. Sensen, G. Voordouw, J. Foght, L. M. Gieg
JOURNAL OF BIOTECHNOLOGY
(2016)
Article
Microbiology
Maria Aguilar, Elisabeth Richardson, BoonFei Tan, Giselle Walker, Peter F. Dunfield, David Bass, Camilla Nesbo, Julia Foght, Joel B. Dacks
JOURNAL OF EUKARYOTIC MICROBIOLOGY
(2016)
Article
Environmental Sciences
Mohd Faidz Mohamad Shahimin, Julia M. Foght, Tariq Siddique
SCIENCE OF THE TOTAL ENVIRONMENT
(2016)
Article
Environmental Sciences
C. E. Victoria Collins, Julia M. Foght, Tariq Siddique
SCIENCE OF THE TOTAL ENVIRONMENT
(2016)
Article
Environmental Sciences
Alsu Kuznetsova, Petr Kuznetsov, Julia M. Foght, Tariq Siddique
SCIENCE OF THE TOTAL ENVIRONMENT
(2016)
Article
Biochemistry & Molecular Biology
Stephen M. J. Pollo, Abigail A. Adebusuyi, Timothy J. Straub, Julia M. Foght, Olga Zhaxybayeva, Camilla L. Nesbo
Article
Microbiology
Valerie Hubalek, Moritz Buck, BoonFei Tan, Julia Foght, Annelie Wendeberg, David Berry, Stefan Bertilsson, Alexander Eiler
Article
Environmental Sciences
Jude D. Kong, Hao Wang, Tariq Siddique, Julia Foght, Kathleen Semple, Zvonko Burkus, Mark A. Lewis
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Microbiology
Mohd Faidz Mohamad Shahimin, Julia M. Foght, Tariq Siddique
Summary: The study found that indigenous microbial communities in soils from different oil sands tailings ponds exhibit different responses to iso-alkanes degradation. Peptococcaceae members were identified as key iso-alkane degraders, but associated with different archaeal partners. Additionally, acetoclastic and hydrogenotrophic methanogens were found to co-dominate in CNUL MFT during the degradation of three iso-alkanes, while CNRL MFT showed enrichment in Methanoregula and Methanosaeta during the degradation of three and five iso-alkanes, respectively.
Article
Engineering, Environmental
Alsu Kuznetsova, Petr Kuznetsov, Rozlyn F. Young, Kathleen M. Semple, Carmen Li, Julia M. Foght, Tariq Siddique
Summary: Adding agricultural byproducts to mature fine tailings and stimulating microbial activity in a stirred tank reactor accelerated consolidation and water recovery. The treatment induced transformation of tailings minerals, increased concentrations of major ions in recovered porewater, and elevated levels of certain trace elements.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Microbiology
Julia M. Foght, Lisa M. Gieg, Tariq Siddique
FEMS MICROBIOLOGY ECOLOGY
(2017)
Article
Microbiology
BoonFei Tan, Kathleen Semple, Julia Foght
FEMS MICROBIOLOGY ECOLOGY
(2015)
Article
Microbiology
Nidal Abu Laban, Anh Dao, Julia Foght
FEMS MICROBIOLOGY ECOLOGY
(2015)