Format

Send to

Choose Destination
Environ Res. 2017 Jul;156:19-22. doi: 10.1016/j.envres.2017.02.035. Epub 2017 Mar 14.

The impact of sewage sludge treatment on the content of selected heavy metals and their fractions.

Author information

1
Faculty of Civil and Environmental Engineering, Bialystok University of Technology, 45A Wiejska St., Bialystok 15-351, Poland. Electronic address: k.ignatowicz@pb.edu.pl.

Abstract

The aim of the study was to assess the physicochemical properties of compost made of municipal sewage sludge from selected Municipal Sewage Treatment Plant. Content of basic macroelements and heavy metals (Zn, Cu, Cr, Cd, Ni, Pb, Hg, Mg, Ca, N, P, K, Na) and their fractions was determined by means of BCR method. Based on the analyzes, it was found that the content of heavy metals in compost did not exceed the limits set by natural land management of sewage sludge; the compost is very abundant in biogenic elements - nitrogen and phosphorus - and it can be also considered a significant source of calcium and magnesium. The analysis of results obtained from the three-stage chemical extraction revealed that deposits subjected to aerobic stabilization and composting accumulate metals (in descending sequence) in fractions III and II, i.e. fractions virtually inaccessible to the ecosystem in optimal conditions of use.

KEYWORDS:

Compost; Metals fractions; Sewage sludge

PMID:
28314150
DOI:
10.1016/j.envres.2017.02.035
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center