2 edition of effect of underground coal gasification on ground water found in the catalog.
effect of underground coal gasification on ground water
Edward A Walters
by U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory in Cincinnati, OH
Written in English
|Statement||Edward A. Walters and Thomas M. Niemczyk|
|Contributions||Niemczyk, Thomas M, Industrial Environmental Research Laboratory (Cincinnati, Ohio)|
|The Physical Object|
|Pagination||7 p. :|
Hydrogeological and Geomechanical Aspects of Underground Coal Gasification and its Direct Coupling to Carbon Capture and Storage June Mine Water and the Environment 30(2) Underground coal gasification is an underground coal controlled combustion process, the combustible gas generated by the thermal effect of coal and chemical action.
When ground water returns to the gasification zone, leaching and dissolution processes lead to the formation of a plume of contaminated ground water, which begins tomore» In addition, fissuring and roof collapse may destroy the integrity of the underground reaction vessel permitting contaminants to escape to the surface or into overlying aquifers. Underground coal gasification is an industrial process which converts coal into product is an in-situ gasification process carried out in non-mined coal seams using injection of .
Underground Coal Gasification and Efforts of CMRI. 1. galleries in the coal seam are used as the gasification channels, and boreholes are constructed to communicate with the surface. Ground water depletion and contamination. > Preparation of EIA and EMP for UCG projects. Underground Coal Gasification (UCG) involves igniting coal in the ground, then collecting and using the gases that result from its partial combustion. Although the idea dates back over a century, very few UCG plants have ever been built. Underground gasification could potentially allow the use of coal that is currently uneconomical to mine.
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The complete report, entitled "The Effect of Underground Coal Gasification on Ground Water," (Order No.
PB ; Cost: $, subject to change) will be available only from: National Technical Information Service Port Royal Road Springfield, VA Telephone: The EPA Project Officer can be contacted at: Industrial.
The effect of underground coal gasification on ground water Author: Edward A Walters ; Thomas M Niemczyk ; Industrial Environmental Research Laboratory (Cincinnati, Ohio). The potential effect of underground coal gasification on groundwater has been examined in a laboratory study.
The study was directed at Fruitland Formation subbituminous coal of the San Juan Basin and at the groundwater found in this coal seam.
Two wells were drilled into the coal seam at a potential UCG test site. Groundwater samples and core samples of overburden, underburden and coal.
The effect of underground coal gasification on groundwater: Publication: Energy and Technology Review, Sept. p. Ground water contamination as a result of underground coal gasification has been studied over a month period at an experimental site in Wyoming by means of gas chromatography and mass spectrometry.
The experiments. Underground coal gasiﬁcation is the in situ conversion of coal into an energy-rich product gas. It takes place deep underground, using chemical reactions to consume the coal and grow a cavity. Gas wells, drilled into the coal seam, inject reactant air, oxygen, and/or steam to sustain the reactions.
Production wells then extract the product gas. The environmental effect of underground coal gasification semi‐coke on confined groundwater Bing Xu School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan, People's Republic of China. Underground Coal Gasification and Combustion provides an overview of underground coal gasification technology, its current status and future directions.
Comprehensive in approach, the book covers history, science, technology, hydrogeology, rock mechanics, environmental performance, economics, regulatory and commercial aspects of UCG projects. The effect of water intrusion on the results of underground gasification is shown remarkably well in a United States paper which reviews all the data published in the Soviet literature .
Figure 5, which is taken from this study, establishes a correlation between the seam thickness, the water inflow (expressed in m 3 per ton of coal gasified) and the lower heating value of the gas generated. The coal seam and surrounding rock with low permeability ensure the underground system integrity of the gasification panels and reduce gas leaks, which reduces the degree of negative impact of UCG on the environment including groundwater and also minimal rates of migration of the contaminated flow over considerable distances.
Groundwater pollution is considered the most serious potential environmental risk related to the underground coal gasification technology (UCG). A variety of hazardous water-born contaminants have been identified during different UCG operations conducted so far, and in some locations long-term groundwater contaminations were observed.
Groundwater Pollution from Underground Coal Gasification Article in Journal of China University of Mining and Technology 17(4) December with Reads How we measure 'reads'.
Sponsored by NSF-RANN, December 6, Klimentov P. () Influence of groundwater on the process of underground coal gasification, lzv. vyssh. ucheb, zavendemi, Geologiya i xazvedka, 4 Kononov V. () Effect of artificial heat sources on the formation and composition of underground waters and the underground water regime.
Akad. Groundwater plays a key role in underground coal gasification process. It supplies water as reagent in gasification reactions and controls gas and energy losses from underground reactor.
This chapter deals with the former aspect of the role that groundwater plays in UCG. The aim of this study was to examine the risk of heavy metal, ammonia and sulfate transition from underground coal gasification (UCG) chars and process water of Malkara lignite to the groundwater.
Issues in Underground Coal Gasification (with Hoe Creek example) Elizabeth Burton, Ph.D. coal seam groundwater to potable aquifers due to: – Thermally-driven flow away from burn chamber – Buoyancy effects from fluid density gradients resulting from changes in dissolved solids and temperature.
An investigation was conducted to evaluate the effects of aquifer interconnection caused by the collapse of cavities formed in coal seams by two small underground coal gasification experiments in the Powder River Basin, Wyoming.
Underground Coal Gasification (UCG) takes advantage of the same chemical reactions of coal to produce product gases, as those occurring in conventional gasifier reactors. The main difference is that in UCG the underground coal seam itself becomes the reactor, so that the gasification of the coal takes place underground instead of in a manufactured gasification vessel at the surface.1 Obviously.
Underground coal gasification (UCG) is an industrial process which converts coal into product gas. UCG is an in-situ gasification process, carried out in non-mined coal seams using injection of oxidants and steam.
The product gas is brought to the surface through production wells drilled from the surface. The predominant product gases are methane, hydrogen, carbon monoxide and carbon dioxide. Our measurements of ground-water quality in the vicinity of the gasification experiments indicate that the reaction products, such as ash and some coal tars, that remain underground following gasification, are a potential source of localized ground-water contamination.
Campbell JH, Dalton V, Busby J () Effects of underground coal gasification on ground-water quality. Lawrence Livermore Laboratory and United States Geological Survey Google Scholar.
Underground coal gasification (UCG) could serve as an alternative clean source of energy. The UCG process holds multiple benefits. It can extend coal reserves by exploiting deposits thought.Numerical modeling of groundwater flow and water quality at underground coal gasification sites: Final report [Contractor, D.
N] on *FREE* shipping on qualifying offers. Numerical modeling of groundwater flow and water quality at underground coal gasification sites: Final reportAuthor: D. N Contractor.The ground-water system and possible effects of underground coal mining in the Trail Mountain area, central Utah.
(Geological Survey water-supply paper ) "Prepared in cooperation with the U.S. Bureau of Land Management." Bibliography 32 p. Supt. of Docs. No.: I 1. Water, Underground Utah Wasatch Plateau.