HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Pietz, R. I. Articles by Lue-Hing, C. Search for Related Content PubMed Articles by Pietz, R. I. Articles by Lue-Hing, C. Agricola Articles by Pietz, R. I. Articles by Lue-Hing, C.

Application of Sewage Sludge and Other Amendments to Coal Refuse Material: I. Effects on Chemical Composition

Res. and Development Lab., The Metropolitan Sanitary District of Greater Chicago, P.O. Box 368, Canton, IL 61520;

J. R. Peterson and D. R. Zenz

Res. and Development Lab., The Metropolitan Sanitary District of Greater Chicago, 5915 W. Pershing Rd., Cicero, IL 60650;

C. Lue-Hing

Res. and Development Dep., The Metropolitan Sanitary District of Greater Chicago, 100 E. Erie, Chicago, IL 60611.

^* Corresponding author.

ABSTRACT

The effects of sewage sludge, lime, and gypsum on the chemical composition of coal refuse material were examined at a Fulton County, IL, land reclamation site. Treatments consisted of a control, 542 dry Mg ha^–1 anaerobically digested sewage sludge, 89.6 Mg ha^–1 lime, 112 Mg ha^–1 gypsum, and combinations of these amendments. Analysis of coal refuse material (0–15 cm) from 1976 to 1981 showed that the sewage sludge + lime treatment was the most effective in maintaining the refuse pH, and in reducing water-soluble Al and Fe, KCl extractable Al, and total acidity. Gypsum applications decreased the refuse pH and increased water-soluble Al and Fe, KCl extractable Al, and total acidity. The effectiveness of treatments in reducing total acidity was sewage sludge + lime > gypsum + sewage sludge + lime > sewage sludge > lime > gypsum + sewage sludge > control > gypsum + lime > gypsum. Concentrations of water-soluble Ca, Mg, and Na reflected the additions of these cations made by various treatments and the contribution of these cations to refuse electrical conductivity (EC). Profile sampling (0–100 cm) in 1976 and 1981 showed a decline in pH, and an increase in water-soluble Al and Fe and total acidity in 1981 samples from the sewage sludge and gypsum treatments. The changes in the sludge treatment indicate there was a solubilization of metals from the refuse material and sewage sludge with time, as the surface pH (0–15 cm) declined, and a subsequent increase in the total acidity from metals and acidic by-products leached to the 15- to 100-cm depths of the coal refuse material. In the gypsum treatment, the changes observed in the 1981 profile samples reflected the leaching of H₃O⁺, metals, and acidic by-products of pyrite oxidation produced by exchange with Ca from the gypsum amendment.

deceased

Contribution of the Res. and Development Dep., The Metropolitan Sanitary District of Greater Chicago, Chicago, IL 60611.

Received for publication March 21, 1988.