Results 191 to 200 of about 13,246 (253)

Lead contents of coal, coal ash and fly ash

Water, Air, and Soil Pollution, 1975
Flameless atomic absorption spectrometry is applied for the determination of Pb in coal, coal ash and fly ash. Lead concentrations in coal and coal ash ranging from respectively 7 to 110 µg g−1 and 120 to 450 µg g−1 are found. A mean concentration of 1520 µg g−1 in fly ash corresponding to a concentration of 117 µg m−3 in the effluent gas suggests the ...
C. Block, R. Dams
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Retention of boron by coal ash

Environmental Science & Technology, 1982
Adsorption of boron by the hydrous oxides of aluminum, iron, and silicon appears to be the major process that controls the net release of boron from fly ash when the ash is leached at loading rates of greater than 25 g of ash/L. Coprecipitation of borate species with the hydrous oxides also contributes to the retention.
G K, Pagenkopf, J M, Connolly
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Properties of Concrete Incorporating Coal Fly Ash and Coal Bottom Ash

Journal of The Institution of Engineers (India): Series A, 2019
Million loads of coal wastes are being generated everywhere across the globe in the form of fly ash and bottom ash. Utilization of such waste materials in concrete is an eco-friendly choice. Therefore, the objective of the current experimental investigation is to explore the effects of fly ash and bottom ash on the properties of concrete by replacing ...
Rajib Kumar Majhi, Amar Nath Nayak
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Acid leaching of coal and coal-ashes⋆

Fuel, 2003
Twelve Turkish lignites and the corresponding ashes were leached in sulfuric acid (pH 1.0, 25 8C) for 14 days. Asphaltite from Silopi amended the coals. The conditions mimic treatment in the effluent from bioleaching of sulfidic mineral concentrates, but the results are equally valid for an isolated leaching process.
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Desulfurization of Coal with Oak Ash Extraction

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2021
Desulfurization is an essential method to eliminate the harmful environmental effects of coal. Various physical, chemical and biological desulfurization methods are available in the literature.
Gizem Hazan Çağlayan, Ubeyde Ipek
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From ashes to ashes: The chemical alterlives of coal ash

Geographical Research
Abstract Toxic geographies disproportionately impact low‐income and racially marginalised communities, degrading the land, water, and air they depend upon. This paper examines Uniontown, Alabama, a rural town located in the heart of the Black Belt region, and also the site of Arrowhead Landfill—an industrial and solid waste facility ...
Shorna Allred, Neelia Heath
openaire   +1 more source

Settling of Coal Ashes

Journal of Environmental Engineering, 1983
Settling characteristics of coal ashes collected from TVA power plants are studied. Since the interface between a clarified zone and a suspension is not distinctly visible, a graphical method is developed to determine the settling velocity of the interface and to estimate the suspended solids concentration in effluent from a sedimentation basin ...
Byung R. Kim, T.‐Y. J. Chu, R. J. Ruane   +2 more
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Radioactivity of coal and ash

Coke and Chemistry, 2010
The radioactivity of Kuznetsk Basin coal and ash is considered, in relation to other regions.
Kh. A. Iskhakov, E. L. Schastlivtsev, Yu. A. Kondratenko, M. L. Lesina   +3 more
openaire   +1 more source

Elemental analysis of coal and coal ASH by PIXE technique

Applied Radiation and Isotopes, 2012
Coal and coal ash samples were characterized by particle induced X-ray emission spectroscopic technique. Sixteen elements, namely K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, As, Rb, Sr, Y and Pb were quantified in this study. Elements like K, Ca, Ti and Fe were present as major elements, whereas, other elements like V, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Rb,
K C, Patra, Tapash R, Rautray, B B, Tripathy, P, Nayak   +3 more
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