Coalbed methane emissions and drainage methods in
Coalbed methane is generated in the coalification process. The two main sources of methane are biogenic and thermogenic, as shown in Fig. 1 (Moore, 2012).Normally, the thermogenically derived methane content in coal is higher than the content of biogenic methane (typically less than 6 m 3 /t). In a specific basin, the biogenic …
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Pre-Feasibility Study for Coal Mine Methane Recovery …
the auspices of the Global Methane Initiative (GMI), this pre-feasibility study evaluates the technical and economic viability of a coal mine methane (CMM) recovery and utilization project at the Sawang Colliery in India. Advanced Resources International, Inc. (ARI) developed the study for a pre-mine drainage program for the Sawang Colliery
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U.S. Surface Coal Mine Methane Recovery Project …
thriving, coalbed methane development in the form of surface mine pre-drainage could make a sizeable contribution to methane recovery. Realistically, the only feasible type of methane recovery to be deployed at surface mines is pre-mine drainage. Because of their proximity to existing CBM production wells, any pre-drainage
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Mine drainage: Remediation technology and resource recovery
The second section summarizes resource recovery efforts using various technologies, such as selective precipitation, membrane process, and biological systems. Practitioner points • Significant ...
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Map of US Coal Mine Methane Current Projects and Potential
The Map of U.S. Coal Mine Methane (CMM) Current Projects and Potential Opportunities is not an exhaustive list of all coal mines in the United States. Only active mines that emit at least 2 million cubic feet of methane per day (in total from drainage and ventilation systems) are included. Similarly, the map includes abandoned mines that ...
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UNECE Shares Best Practice for Methane Recovery from Closed Mines
Methane's effect on global warming is "84 times greater than carbon dioxide" (CO2) over a 20-year period due to its 12-year atmospheric life. Fossil fuel production, including coal mining, is one of the main sources of methane. In 2016, for instance, US coal mines released an amount of methane equivalent to the warming impact caused by 13 ...
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(PDF) Recovery of Iron and Aluminum from Acid Mine Drainage …
The recommended pH for iron precipitation was pH 3.5-4.0 with precipitate purity > 93.4% and iron recovery > 98.6%. AMD water after iron removal was used as source water for aluminum recovery ...
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ECONOMIC COMMISSION FOR EUROPE
effective methane emission reductions through recovery and use from four key methane sectors: coal mining, landfills, oil and gas systems, and agriculture. The Coal Subcommittee has brought together key experts in coal mine methane recovery and utilisation to share information about state‐of‐the‐art
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Multiscale Transport Characteristics of Coalbed Methane in …
A considerable amount of coalbed methane (CBM) that can be extracted by surface vertical wells exists in gobs of abandoned mines. A model of CBM enrichment and extraction in abandoned mine gobs during mine closure and methane extraction by surface vertical wells was established based on the migration law of CBM occurrence and time …
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Prospect of utilizing coal mine drainage sludge as an iron …
2.1 Solid content. Solid content of coal mine sludge was reported to vary from 1 to 20% with a typical value in the range of 1–1.5% (Viadero et al. 2006).Sludge solid content is highly dependent on the types of treatment (Rakotonimaro et al. 2017).Active treatment is characterized by continuous dosing of alkaline agent to neutralize AMD …
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Best Practice Guidance for Effective Methane Recovery …
standards on coal mine methane (CMM) capture and use have already been set out in the Best Practice Guidance on Effective Methane Drainage and Use in Coal Mines. This document complements that guidance and is aimed at completing the coal mining cycle by considering the methane emissions that continue after mining has ceased and mines …
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Liquid CO 2 injection to enhance coalbed methane recovery…
Request PDF | On Sep 3, 2020, Gaoming Wei and others published Liquid CO 2 injection to enhance coalbed methane recovery: An experiment and in-situ application test | Find, read and cite all the ...
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Geological and microstructural characterisation of coal …
coal blocks, coal mine methane (CMM) during mining, ventilation air methane (VAM) from the mine ventilation system, and abandoned mine methane (AMM) from goaf/ gob area (Karacan et al. 2011). Methane drainage from coal seams depends on the chemical and petro-graphic compositions of coal, rank, burial depth, coal
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Reservoir reconstruction technologies for coalbed methane recovery …
The pre-mining degasification and gas drainage in the deep coal seams is technically challenging, therefore, CBM reservoir stimulation emphasizing on the permeability enhancement is required for the mine degasification and for the methane energy recovery as well [15], [16].
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Analysis of International Best Practices for Coal Mine …
secure the recovery and use of coal associated gases, primarily coal mine methane (CMM) and coalbed methane (CBM), which are obtained through pre-mine drainage at active coal mines1. This report is not intended to provide a detailed analysis of polices and measures, or to come to a univocal conclusion about best policies and measures.
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Abandoned Mine Methane as an Energy Source
Abandoned Mine Methane (AMM) • An abandoned coal mine can be a large reservoir of methane and source of fugitive emissions • Abandoned mine gas has favorable characteristics o Generally contains 40-80% methane o Few wells needed if mine is sealed well • Abandoned mines are often nearby active underground mines and coal mine …
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Best Practice Guidance for Effective Methane Drainage and Use in Coal Mines
Coal mines are not only a safety management challenge but also a major source of greenhouse gas emissions. Methane release during coal mining creates unsafe working conditions in underground coal mines around the world. This Guidance is intended to provide a genuine contribution to improve mine safety practices at active underground …
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(PDF) Recovery of Metals from Acid Mine …
Another iron-rich wastewater is acid mine drainage (AMD). AMD is acidic and mainly composed of sulfate, salts, and several metals, where iron and aluminum are present in higher amounts [61]. It is ...
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Metals Recovery from Acid Mine Drainage and
Many methods including chemical, electrochemical, and biological methods were adopted in the recovery of trace metals including Fe, Pb, Cu, Cd, Zn, Ni, and Co from AMD (Gaikward and Gupta, 2008 ...
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Selecting the Optimal Borehole Drilling Pattern for Methane Drainage …
Methane gas recovery, not only secures the mining environment but also the ventilation costs of mine are reduced and accordingly the adverse consequences such as greenhouse gas emissions are reduced (Höglund-Isaksson et al. 2020). Methane gas drainage can be done in two ways; pre-drainage and post-drainage (Jia et al. 2021; …
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Methane drainage and utilization in coal mines with strong …
Evaluation of methane drainage and use effectiveness. The practice of methane drainage and utilization has promoted enhanced safety, environmental mitigation and energy recovery in the Luling mine. Pre-drainage eliminates the risk of outbursts in the Nos. 8, 9 and 10 seams, and post-drainage reduces the overall gas emissions from coal …
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Quantitative optimization of drainage strategy of coalbed methane …
An improved method for high-efficiency coal mine methane drainage: Theoretical analysis and field verification. Energy Sci. Eng. 6, 739–748 (2018). Article CAS Google Scholar
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Simulation of an enhanced gas recovery field trial for coal mine …
1. demonstrate the ability of enhanced gas recovery to increase gas flow rates in a coal mine gas drainage environment and. 2. reduce the gas content of the coal matrix to a level that would result in negligible methane emission upon mining, thus eliminating fugitive gas emissions and frictional ignition hazards.
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Mine drainage: Remediation technology and resource recovery
Drainage from current and historic mining operations remains a persistent environmental problem. Numerous research and development efforts were made in 2019 with a goal to minimize the impact of mine drainage on the environment, while other research endeavors addressed the mine drainage issue from a different perspective, where mine drainage …
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Basics of Coal Mine Methane
Basic Principles of Methane Drainage. Methane drainage includes the following basics elements: • Gas Drainage System: An integrated system combining boreholes with a gas …
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Selective Precipitation of Copper and Zinc over Iron from Acid Mine …
In order to selectively precipitate copper (Cu) and zinc (Zn) over iron (Fe) for recovery from an acid mine drainage (AMD) generated from an abandoned copper mine located in east Japan, the ...
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Coal Mine Methane (CMM) Finance Guide
Our mission is to promote the profitable recovery and utilization of coal mine methane (CMM), a potent greenhouse gas (GHG) that contributes to climate change if emitted to the atmosphere. When collected and used for energy, CMM is a valuable fuel source. CMOP estimates that more than 200 CMM projects exist worldwide.
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Best Practice Guidance for Effective Methane …
The Best Practice Guidance on Effective Methane Drainage and Use in Coal Mines fills a critical void. Recommended principles and standards on coal mine methane (CMM) capture and use are set out in a clear and succinct presentation to provide decision-makers with a solid base of understanding from which to direct policy and commercial …
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Methane drainage and utilization in coal mines with strong …
Evaluation of methane drainage and use effectiveness. The practice of methane drainage and utilization has promoted enhanced safety, environmental …
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(PDF) Methane drainage and utilization in coal mines with …
Methane drainage and utilization in coal mines with strong coal and gas outburst dangers: A case study in Luling mine, China September 2014 Journal of Natural Gas Science and Engineering 20:357-365
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