Fractions of heavy metals in residue after incineration of sewage sludge | Zendy

Lidia Dąbrowska | Zendy

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Fractions of heavy metals in residue after incineration of sewage sludge

Author(s) -

Lidia Dąbrowska

Publication year - 2013

Publication title -

environment protection engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.189

H-Index - 21

eISSN - 2450-260X

pISSN - 0324-8828

DOI - 10.37190/epe130210

Subject(s) - incineration , heavy metals , sewage sludge , residue (chemistry) , waste management , environmental science , environmental chemistry , sewage , chemistry , environmental engineering , engineering , biochemistry

Comparative evaluation of metal occurrence was conducted for sludge originating from three wastewater treatment plants, which differ in wastewater treatment methods, processing and drying of sludge. It was demonstrated that metals (Zn, Cu, Ni, Pb, Cd, Cr) in sludge are mainly bound to organic-sulfide fraction. Zinc was also present in significant amounts in hydrated iron and manganese oxide fraction, nickel and cadmium in exchangeable-carbonate fraction, whereas lead in residue fraction. In ash obtained after calcination at 600 °C occurred mainly metal enriched nearly insoluble compound fraction (residual fraction). Metal accumulation in such non-mobile fraction is advantageous with respect to soil-water environment protection.

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