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The aim of this paper was to determine the capability for metal elution that may constitute potential contamination to the water environment from post-process cavern residue after underground coal gasification (UCG).Samples of raw coals that had been subjected to gasification (three samples of hard coal, the coal mine “Bobrek”, the experimental mine “Barbara” and the coal mine “Piast”, and a sample...
A study on the environmental impacts of underground coal gasification (UCG) was conducted during a field-scale, in situ coal gasification experiment at the Experimental Mine “Barbara” in Poland. This two-week experiment was a part of a technological effort aiming to produce hydrogen-rich product gas using the UCG technology. As groundwater pollution is recognised to be the most serious environmental...
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. Characteristic organic UCG-related pollutions are mostly the phenols,...
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