Tentative identification of chemical elements likely to escape in the atmosphere at the Lingan coal-fired power plant, Lingan, Nova Scotia

CIM Bulletin, Vol. 75, No. 845, 1982

ERWIN L. ZODROW, Department of Geology, University College of Cape Breton, Sydney, Nova Scotia

For 25 chemical elements in electrostatically precipitated fly ash (Lingan coal-fired power station), concentration changes are studied as a function of increasing proportions of fines (ash particle diameter less than 45 micrometres). Elements that are involved when concentrations increase as the proportions of fines increase are likely to escape into the atmosphere. These are Th, U, As, S, P, Sb, Na, Ag, Zn, Pb, Ni, Ba, Sc, Al, Mo (and Bi, Ge, Ga, F and Li), i.e., more or less highly volatilized elements. Of the less volatilized metals such as Fe, Ca, Cu, Ti, K, Co, Mn (and lanthanides), certain portions presumably also escape as stack emissions. Diadochy and spinel formation in bottom slag is presented as an emission-reducing agent for certain metals.
Keywords: Coal combustion, Power plants, Ash analysis, Potential Atmospheric pollution, Spinels, Bottom slag, Environmental control, Lingan Plant.