Results of the use of sewage sludge for improvement of calcareous mining spoils

Use of sewage sludge for improvement of calcareous bauxite mining spoils is examined. Quantities of the sludge used, were 0,40,80 and 120 tones dry weight per hectare. Incorporation of sludge into the spoils resulted in significant increase of organic matter, N, P, Ca, K, Mg, and CEC, while pH was r...

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Bibliographic Details
Published inInternational journal of surface mining, reclamation and environment Vol. 11; no. 4; pp. 163 - 167
Main Authors Brofas, G., Varelides, C.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.01.1997
Subjects
Mine spoils
Reclamation
Sewage sludge
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Summary:Use of sewage sludge for improvement of calcareous bauxite mining spoils is examined. Quantities of the sludge used, were 0,40,80 and 120 tones dry weight per hectare. Incorporation of sludge into the spoils resulted in significant increase of organic matter, N, P, Ca, K, Mg, and CEC, while pH was reduced. Increased heavy metals Pb, Cu, Zn and Mn was also observed, but their concentrations were within the range of natural soils occurrence. Water holding capacity and available spoil moisture were significantly increased. Addition of sludge significantly increased the number of the plants per square meter, production of above ground biomass and canopy cover.
ISSN:1389-5265
1744-5000
DOI:10.1080/09208119708944088