Influence of Soil pH and Application Rate on the Oxidation of Calcium Sulfite Derived from Flue Gas Desulfurization.

Autor:	Lee, Y. B.1 lee.2306@osu.edu, Bigham, J. M.1, Dick, W. A.2, Jones, F. S.1, Ramsier, C.3
Předmět:	*Flue gas desulfurization *Soil oxidation *Calcium in soils *Hydrogen-ion concentration *Coal-fired power plants Sulfites
Zdroj:	Journal of Environmental Quality. Jan/Feb2007, Vol. 36 Issue 1, p298-304. 7p.
Abstrakt:	This study discusses the oxidation and dissolution rate of calcium sulphite in soils under variable pH and application conditions. Calcium sulphite hemihydrate is a byproduct of coal fired utility plants and is derived from flue gas desulfurization. Oxidation rates were found to decrease with increasing rates of application. The acidity of the soil should be adjusted to a pH of 6. 0 or greater. There appears to be ample time for oxidation/dissolution reactions to occur without introducing biocidal effects related to oxygen scavenging in no till systems with autumn surface applications of calcium sulphite in advance of spring plantings.
Databáze:	GreenFILE
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