Environmental Engineering

CO2 Storage in Carboniferous Formations and Abandoned Coal by Manchao He, Luis Ribeiro e Sousa, Derek Elsworth, Euripedes

By Manchao He, Luis Ribeiro e Sousa, Derek Elsworth, Euripedes Vargas Jr.

Underground geological garage of carbon dioxide (CO2) has massive strength for mitigating weather switch. CO2 will be adequately injected and kept at good characterised and correctly controlled websites. Injecting carbon dioxide in deep geological formations can shop it underground for lengthy sessions of time. Depleted oil and fuel reservoirs, saline aquifers and carboniferous formations can be utilized for garage of CO2, in addition to in deserted coal mines. At depths less than approximately 800-1000m, CO2 has a liquid-like density that allows the effective use of underground reservoirs in porous sedimentary rocks.

The papers within the current quantity are from prime specialists within the box of CO2 garage and have been offered at a global Workshop on CO2 garage in Carboniferous Formations and deserted Coal Mines (Beijing, China, 8-9 January 2011). CO2 garage in deserted coal mines appears to be like to have a vibrant destiny. even though CO2 garage in Carboniferous Formations and deserted Coal Mines is essentially meant for mining engineers, environmental engineers and engineering geologists, the booklet can be worthwhile to civil engineers, and teachers and pros in geophysics and geochemistry.

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Extra info for CO2 Storage in Carboniferous Formations and Abandoned Coal Mines

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Among them, the eastern North China Plain, the middle reaches of Yellow River region and northeast China’s are major coal production bases and there are a large number of abandoned coal mines, which can provide favorable conditions for the storage of CO2 emissions from thermal power generation. In addition, conventional thermal coal transport has many disadvantages, such as huge scale, long distance, and overburden. These unfavorable elements caused a series of problems including environmental pollution, rising prices and other social issues.

The grouting body can support 8 MPa pressure, so it is capable of withstanding the pressure of gas after CO2 injection, which can prevent CO2 leakage. 4 Prevention of fault leakage During underground mining, when a fault is detected, the common countermeasure used in the mining activities is to keep the fault in the protection of the pillar (Figure 13) in order to prevent fault instability which will affect the advance of the work face and can cause water inrush, coal and gas outburst and other engineering disasters.

Pilot tests. An International Workshop on CO2 Storage in Carboniferous Formations and Abandoned Coal Mines was held in January 8–9, 2011, Beijing. Several publications were included in the Proceedings of the Workshop, as referred in Table 1. b. Experiments on CO2 and CH4 Sorption Besides the Risk Assessment of CO2 Storage in Carboniferous Formations, GDUE is also carrying out another research program about gas sorption of soft rock. The purposes of the studies are as following: • Conduct CO2 and CH4 sorption experiments of different types of soft rock under different temperature and humidity conditions • Summarize CO2 and CH4 sorption characteristics of various soft rocks • Explore CO2 and CH4 sorption mechanisms and affecting factors of various soft rocks.

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