Leaching of Various Metals from Coals and Coal Ashes
نویسندگان
چکیده
منابع مشابه
Radioactivity of Coals and Fly Ashes
Coal, like most materials found in nature, contain trace quantities of the naturally occurring primordial radionuclides. Therefore, the combustion of coals results in the release into the environment of some natural radioactive elements and in a redistribution of these radioactive elements in the surface soil particularly in the vicinity of coal-fired power plants, where it can modify ambient r...
متن کاملABSTRACT Title of Document: CHARACTERIZATION OF TRACE METAL LEACHING FROM MARYLAND COAL FLY ASHES
Title of Document: CHARACTERIZATION OF TRACE METAL LEACHING FROM MARYLAND COAL FLY ASHES Enes Ozkok, Master of Science, 2011 Directed By: Associate Professor Ahmet Aydilek, Department of Civil and Environmental Engineering Three coal fly ashes with different acid-base characteristics and their mixtures with an embankment soil were analyzed for arsenic, copper, and chromium leaching as function ...
متن کاملTrace Element Chemistry of Fly Ashes from Co-combusted Petroleum Coke and Coal
Because of economics, petroleum coke sometimes replaces or supplements coal as a fuel in power plant combustors. Fly ashes were recovered from the combustion of petroleum coke with moderateto high-sulfur Illinois Basin bituminous coal in a western Kentucky power plant. The fly ashes primarily consist of glass, quartz, mullite and spinels. When compared with ordinary fly ashes from Illinois Basi...
متن کاملTreatment and Recovery of Heavy Metals from Incinerator Ashes
High levels of potentially leachable toxic metals such as Pb, Cd, and Cr, in the ash residues require consideration of treatment technologies prior to disposal or utilization of the ashes in other applications. Extraction studies revealed information on the leaching characteristics of the ashes and on the ability of the extraction solutions to separate these metals from the ash matrix. The kine...
متن کاملOn the Radioactivity of Fly Ashes from Coal Power Plants
The radioactivity of Greek lignites and their ashes was studied. It was found that the radionuclides in them belong to the uranium series. Fly ashes are relatively rich in radioactivity. Concentrations up to 7 , 1 0 _ 5 g / g and 12 pCi/g were measured for 238U and 226Ra, respectively. The associated hazards from radioactivity escaping from stacks of thermopower plants or when fly ashes are use...
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ژورنال
عنوان ژورنال: Journal of the Fuel Society of Japan
سال: 1982
ISSN: 0369-3775,2185-226X
DOI: 10.3775/jie.61.405