Journal ArticleDOI
Pathways of thirty-seven trace elements through coal-fired power plant
David H. Klein,Anders W. Andren,Joel A. Carter,Jeul F. Emery,Cyrus Feldman,William Fulkerson,William S. Lyon,Jack C. Ogle,Yair Talmi +8 more
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In this paper, coal, fly ash, slag, and combustion gases from a large cyclone-fed power plant 870 MW (e) were analyzed for a suite of elements.Abstract:
Coal, fly ash, slag, and combustion gases from a large cyclone-fed power plant 870 MW(e) were analyzed for a suite of elements. Mass balance calculations show that the sampling and analyses were generally adequate to describe the flows of these elements through the plant. Most Hg, some Se, and probably most Cl and Br were discharged to the atmosphere as gases. As, Cd, Cu, Ga, Mo, Pb, Sb, Se, and Zn were quite concentrated in fly ash compared to the slag, and were more concentrated in the ash discharged through the stack than in that collected by the precipitator. Al, Ba, Ca, Ce, Co, Eu, Fe, Hf, K, La, Mg, Mn, Rb, Sc, Si, Sm, Sr, Ta, Th, and Ti show little preferential partitioning between the slag and the collected or discharged fly ash. Cr, Sc, Na, Ni, U, and V exhibit behavior intermediate between the latter two groups. (auth)read more
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X-ray photoelectron spectroscopic studies of iron oxides
N. S. McIntyre,D. G. Zetaruk +1 more
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Terrestrial sedimentation and the carbon cycle: Coupling weathering and erosion to carbon burial
TL;DR: In this article, the authors examined the linkages between the carbon cycle and sedimentary processes on land and found that sedimentation on land can bury vast quantities of organic carbon, roughly 1015 g C yr−1.
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Uses of Chloride/Bromide Ratios in Studies of Potable Water
TL;DR: In natural ground water systems, both chlorine and bromine occur primarily as monovalent anions, chloride and Bromide Although dissolution or precipitation of halite, biological activity in the root zone, anion sorption, and exchange can affect chloride/bromide ratios in some settings, movement of the ions in potable ground water is most often conservative Atmospheric precipitation will generally have mass ratios between 50 and 150; shallow ground water, between 100 and 200; domestic sewage, between 300 and 600; water affected by dissolution of Halite, between 1,000 and