<abstract xmlns="http://www.w3.org/1999/xhtml">

The immobilization effect of soil amendments on leaching and bioavailability of Pb, Zn and Cd in highly contaminated soils under industrial impact was studied by collecting the soils in the surroundings of Zn-Pb Smelter “Miasteczko Śląskie” in southern Poland as an example. Various amounts of four additives (phosphate fertilizer, limestone powder, bentonite rock and bog iron ore) were tested in laboratory experiments to compare the effectiveness of three dominant mechanisms of immobilization: precipitation of phosphates, pH increase, and sorption. The contents of metals before immobilization were determined by extraction in CaCl2, EDTA and <italic>aqua regia</italic>. Cadmium and zinc are mainly represented by soluble, bio-available forms extractable in CaCl2, while lead by potentially bioavailable speciations extractable by EDTA. Most effective in the immobilization of these metals were the amendments increasing soil pH: limestone powder and phosphate fertilizer. Bog iron ore and bentonite were less effective because the soil pH was too low for efficient cation adsorption.
</abstract>

The immobilization effect of soil amendments on leaching and bioavailability of Pb, Zn and Cd in highly contaminated soils under industrial impact was studied by collecting the soils in the surroundings of Zn-Pb Smelter “Miasteczko Śląskie” in southern Poland as an example. Various amounts of four additives (phosphate fertilizer, limestone powder, bentonite rock and bog iron ore) were tested in laboratory experiments to compare the effectiveness of three dominant mechanisms of immobilization: precipitation of phosphates, pH increase, and sorption. The contents of metals before immobilization were determined by extraction in CaCl2, EDTA and aqua regia. Cadmium and zinc are mainly represented by soluble, bio-available forms extractable in CaCl2, while lead by potentially bioavailable speciations extractable by EDTA. Most effective in the immobilization of these metals were the amendments increasing soil pH: limestone powder and phosphate fertilizer. Bog iron ore and bentonite were less effective because the soil pH was too low for efficient cation adsorption.

Experimental immobilization of Zn, Pb and Cd by additives to highly contaminated soils

Mineralogia

This work is licensed under the Creative Commons Attribution 4.0 International License.

The immobilization effect of soil amendments on leaching and bioavailability of Pb, Zn and Cd in highly contaminated soils under industrial impact was studied...

Experimental immobilization of Zn, Pb and Cd by additives to highly contaminated soils

Publié en ligne: 24 déc. 2022

Pages: 67 - 81

Reçu: 10 mai 2022

Accepté: 29 nov. 2022

DOI: https://doi.org/10.2478/mipo-2022-0006

Mots clés
trace elements, soil amendments, soil extraction, industrial pollution, Miasteczko Śląskie

© 2022 Justyna Hałabuza et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Experimental immobilization of Zn, Pb and Cd by additives to highly contaminated soils

Publié en ligne: 24 déc. 2022

Pages: 67 - 81

Reçu: 10 mai 2022

Accepté: 29 nov. 2022

DOI: https://doi.org/10.2478/mipo-2022-0006

Mots cléstrace elements, soil amendments, soil extraction, industrial pollution, Miasteczko Śląskie

© 2022 Justyna Hałabuza et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
trace elements, soil amendments, soil extraction, industrial pollution, Miasteczko Śląskie