The key step in coal gasification is the production of methane by methanogenic archaea. However, known methanogens only use small carbon …

Article. A contribution of hydrogenotrophic methanogenesis to the biogenic coal bed methane reserves of Southern Qinshui Basin, China. Environmental …

Methanogenesis is an anaerobic respiration that uses oxidized carbon such as CO 2 as a terminal electron acceptor. Thus, methanogens are common in habitats that are poor in other electron acceptors, such as O 2, NO 3 –, Fe 3+ and SO 4 2–.These habitats are quite common, especially in areas of high primary productivity, where …

Highlights. •. Methanogenesis in coal-bearing environments profoundly shapes biochemical energy production. •. Hydrogenotrophic methanogenesis is of significant interest in terms of carbon re-cycling and hydrogen storage. •. …

A number of studies have found that archaea methanogens create CH 4 through either an acetoclastic or CO 2-reduction methanogenesis process (e.g. Green et al., 2008, Hendry et ... For example, in the case of coal mine degassing it is essential that results be obtained almost immediately thus 'fast' desorption procedures are used (e.g. …

Hydrogenotrophic methanogenesis involves enzymatic conversion of carbon dioxide to methane. This Perspective describes the reactions at play, with a particular focus on how [Fe]-hydrogenase ...

Methanogenesis in coal samples after stimulation by consortia SZ A and PT A was higher than had been previously observed e.g. in coal samples from the Deer Creek Coal Mine (Utah, USA), where similar inoculate sources were used (e.g. lake sediments and wetland soil) (Opara et al., 2012). 3.5. FT-IR spectra of the coals

The purpose of this study was to determine if methanogenesis is an ongoing process in the Paleocene Fort Union Formation coal seams of the Powder River Basin (PRB) in Wyoming, United States. This has important implications for whether methanogenesis could replenish natural gas once the existing reserves are depleted …

the complex aromatic organic compounds present in coal can be used for methanogenesis. We show that deep subsurface–derived Methermicoccus …

The activity of methanogens and related bacteria which inhabit the coal beds is essential for stimulating new biogenic coal bed methane (CBM) production from the coal matrix.

The utilization of microbial methanogenesis has the potential to emerge as a promising method for extracting energy from subsurface coal reservoirs in the future. Microorganisms can produce methane, which serves as the principal constituent of natural gas, through the process of decomposing organic substances in coal.

The results showed that the biomethane yields in co-degradations of coal and different types of straw were all higher than that in degradation of only coal or only straw with the yield from rice ...

The activity of methanogens and related bacteria which inhabit the coal beds is essential for stimulating new biogenic coal bed methane (CBM) production from the coal matrix. In this study, the microbial community structure and methanogenesis were investigated in Southern Qinshui Basin in China, and the composition and stable isotopic ratios of CBM …

Science. 14 Oct 2016. Vol 354, Issue 6309. pp. 222 - 225. DOI: 10.1126/science.aaf8821. Microbes make methane from coal. Methane associated with coal beds is an important …

The Process Of Methanogenesis In A Coal Mine. why we still mine coal : npr why we still mine coal as residents of montcoal, w.va., mourn the deaths of at least 25 coal miners in . the process of methanogenesis in a coal mine. Microbial process in Indiana coal beds and for coal bed methanogenesis. Could methane farming hurt Wyo.'s coal deposits?

Acetoclastic methanogenesis is reported to be the main source of methane formation in abandoned coal mines in Germany [53]. This conclusion is based on 13 C …

The activity of methanogens and related bacteria which inhabit the coal beds is essential for stimulating new biogenic coal bed methane (CBM) production from the coal matrix. In this study, the microbial community structure and methanogenesis were investigated in Southern Qinshui Basin in China, and the composition and stable isotopic …

Methanogenesis performed by anaerobic archaea represents the largest biogenic source of methane on Earth 1–3.This process is a key component of the global carbon cycle and plays an important ...

Eleven coals with vitrinite reflectance ranging from 0.18% to 2.50% were collected from underground coal mines; biomethane production process and carbon isotope fractionation effect in the 123 ...

abstract = "Water and natural gas samples were collected from coalbed methane wells and a surface coal mine in the Powder River Basin (PRB) and analyzed for solute chemistry, isotopes, and gas composition to test hypotheses about the timing and source of recharge, importance of nutrient influx, and extent of microbial methanogenesis in coalbeds.

Dissolved inorganic carbon (DIC) in mine water generated during coal mining is a large and potential source of atmospheric CO2, however its geochemical behaviors under the influence of AMD in ...

The release of H 2 S due to sulfate reduction is detrimental to the methanogenesis process during coal biodegradation. The process of anaerobic fermentation of coal seams may also be affected by degraded intermediates and final products (such as sulfides), which at high concentrations affect pH, disrupt cell …

The microbiological desulfurization of coal is one ious physicochemical parameters such as moisture content, of the most widely applicable options with regard to the volatile matter, and the ratio of total to fixed carbon play an applications of microbial species in coal methanogenesis important role.

Coal bed methane (CBM), a highly regarded alternative energy resource,is extensively underutilized in many countries. It is generated through either thermocatalytic reactions during coalification or anaerobic microbial methanogenesis resulting from coal biodegradation. Biogenic CBM has been found in many CBM reservoirs (Strapoć et al., …

By analyzing the hydrogeochemical characteristics of water produced from the Cenozoic, the limestone, and the coal strata aquifers and the coalbed gas wells, this study focused on water-rock interactions and methanogenesis in the formation water of the Suzhou mining area, Huaibei coalfield, China. Tectonically, this is one of the most …

Highlights. •. Lake sediment and peat microbiota are able to stimulate coal biogasification. •. FT-IR revealed structural changes in coal caused by autochthonous …

The rock was located between coal seam 4 and 5 699 m below the surface, while coal was in the middle of coal seam 5 703 m below the surface, as shown in Fig. 1. Wei et al. (2010) reported that coal seam 5 in the Liulin District is bituminous coal (R o, max = 0.84–2.44%) with moisture ranging from 0.46 to 5.78 and ash yield ranging from 4.88to …

The results indicated that: (1) a high level of diversity of syntrophic bacteria and methanogenic archaea existed in the coal seam of the coal mine; (2) biogenic methane regeneration from coal could be realized by the addition of an enriched indigenous microbial consortia; (3) acetotrophic methanogenesis was predominant based on …

1. Introduction. Methane in coal seams originates considerably by thermogenic activities during coalification process. Recently its origin through biogenic activities of microbes acting on the organic constituents of coal has been proposed [1], [2].As the world-wide demand of natural gas is expected to increase with the increase of …

The presence of oil in coal seams from coal–oil symbiosis areas poses a serious threat to the safe and efficient mining of coal. However, the information about the application of microbial technology in oil-bearing coal seams was insufficient. In this study, the biological methanogenic potential of coal and oil samples in an oil-bearing coal seam was …