Results 181 to 190 of about 86,031 (227)

Characterization of sintered coal fly ashes

Fuel, 2008
Abstract Can, Catalagzi, Seyitomer and Afsin-Elbistan thermal power plant fly ashes were used to investigate the sintering behavior of fly ashes. For this purpose, coal fly ash samples were sintered to form ceramic materials without the addition of any inorganic additives or organic binders.
M. Erol, S. Küçükbayrak, A. Ersoy-Meriçboyu   +2 more
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Volatility of fly ash and coal

Fuel, 1980
Abstract The volatilization of fly ash has been examined by a number of techniques including TGA—DTA, Knudsen cell mass spectrometry, volatilization of neutron-activated fly ash, and X-ray fluorescence analysis of sized fly ash, low-temperature ash, and the parent coal.
Richard D. Smith, James A. Campbell, Kirk K. Nielson   +2 more
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Coal fly ash decomposes diethyl phthalate

Research on Chemical Intermediates, 2003
Decomposition of diethyl phthalate (DEP) exposed to a coal fly ash has been investigated in water by measuring UV-VIS spectra and GC-MS. Alkaline constituents eluted from the fly ash in the liquid phase gradually hydrolyzed DEP to produce monoethyl phthalate and/or phthalic acid. These products were adsorbed on the fly ash and decarboxylated into ethyl
H. Nishikiori, N. Tanaka, J. Shindoh, K. Sakurai, H. Fujimatsu, E. Suzuki, T. Tsuchida, M. Mitani, T. Fujii   +8 more
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Polymer Concrete Using Coal Fly Ash

Journal of Energy Engineering, 2002
The disposal of coal combustion byproducts wastes has been a pressing issue during the past few decades. In parallel, the formulation of high-performance materials that are stronger and more durable than conventional cement-based materials has emerged as an issue of considerable importance in the construction industry.
K. S. Rebeiz, A. P. Craft
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Radioactivity of coals and fly ashes

Journal of Radioanalytical and Nuclear Chemistry, 2007
The level and the behavior of the naturally occurring primordial radionuclides 238U, 226Ra, 210Pb, 232Th, 228Ra and 40K in coals and fly ashes are described. The activity concentrations of the examined coals and originated from coal mines in Greece ranged from 117 to 435 Bq·kg−1 for 238U, from 44 to 255 Bq·kg−1 for 226Ra, from 59 to 205 Bq·kg−1 for ...
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Fly Ash Iodine Number for Measuring Adsorption Capacity of Coal Fly Ash

ACI Materials Journal, 2014
Fly ash is used as partial replacement of cement in concrete. The residual carbon in fly ash adsorbs some of the organic concrete admixtures, altering the concrete properties. The use of fly ash in concrete is limited by the lack of adequate fly ash adsorption capacity quantification tools.
Zeyad T. Ahmed, David W. Hand, Lawrence L. Sutter, Melanie Kueber Watkins   +3 more
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Coal fly ash as a pozzolan

2017
This chapter provides information on the use of coal fly ash as a pozzolan in concrete. Fly ash can be used to partially replace Portland cement in concrete, and its use provides many technical, economic, and environmental benefits. The characteristics of fly ash and the pozzolanic reaction are described.
Thomas, Michael, Jewell, Robert, Jones, Martyn   +2 more
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Characterization of Mutagenic Coal Fly Ash and Extracts

International Journal of Environmental Analytical Chemistry, 1982
Post-electrostatic precipitator (ESP) fly ash samples were collected from a coal-fired electric power generation plant under three modes of plant operation: normal operation, a low NOx-emission mode of combustion, and operation with the ESP shorted-out.
W H, Griest, J E, Caton, T K, Rao, S H, Harmon, L B, Yeatts, G M, Henderson   +5 more
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Cytotoxicity of inhaled coal fly ash in rats

Environmental Research, 1987
The effect of inhalation of coal fly ash for 6 hr daily for 15 days has been studied on the hematology, blood chemistry, and histopathology of lungs and liver of rats up to 4 months from the first day of exposure. Fly ash inhalation significantly reduced WBC, RBC, and hemoglobin contents at earlier periods after exposure but tended to return to normal ...
S S, Chauhan, V K, Chaudhary, S, Narayan, U K, Misra   +3 more
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Potential Resources from Coal Fly Ash

MRS Proceedings, 1984
AbstractRecent studies at Oak Ridge National Laboratory (ORNL) and elsewhere have identified various chemical processes for recovering useful materials, such as alumina and iron oxides, from coal combustion fly ash. Based on certain assumptions, each of these processes can yield useful products at economical prices.
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