ORIGINAL RESEARCH
Investigation of Heavy Metals Leaching from
Industrial Wastewater Sludge
K. Świerk1, A. Bielicka1, I. Bojanowska1 , Z. Maćkiewicz2
1Department of Environmental Engineering, Faculty of Chemistry, University of Gdańsk, Poland
2Department of Polypeptides Chemistry, Faculty of Chemistry,
University of Gdańsk, 18/19 J. Sobieskiego St., 80 – 852 Gdańsk, Poland
Pol. J. Environ. Stud. 2007;16(3):447-451
KEYWORDS
ABSTRACT
Galvanic sewage sludge from electroplating plant was examined for leaching of heavy metals using
various extracting solutions. The investigated parameters that influence heavy metals leaching were: contact
time, type and concentration of leaching agents and form of sludge. The results of investigations show
that the amounts of heavy metals (copper, nickel, chromium) released from industrial sludge using various
leaching agents were from 0.07% to ~99% of their total contents. The form of sludge (air – dry or mineral
residue) has a significant influence on quantities of metals leached.
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| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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