Phytoextraction of Heavy Metals by Willows Growing in Biosolids under Field Conditions.

Autor: Laidlaw, W. S.1 wlaidlaw@unimelb.edu.au, Arndt, S. K.2, Huynh, T. T.1, Gregory, D.3, Baker, A. J. M.1
Předmět:
Zdroj: Journal of Environmental Quality. Jan/Feb2012, Vol. 41 Issue 1, p134-143. 10p.
Abstrakt: The article presents a field trial which aims to examine phytoextraction of heavy metals through Salix (S.) or willows. The field trial identifies the suitability of cuttings of seven cultivars of Salix that were directly planted into biosolids and soil for decontaminating biosolids. Trees were harvested and irrigated every year for three consecutive years. Harvested biomass was weighed and examined for the contaminant elements, including zinc (Zn), nickel (Ni), lead (Pb), mercury (Hg), chromium (Cr), copper (Cu), cadmium (Cd) and arsenic (As). The study shows that the willows were effective in extracting the most exchangeable/soluble metals, such as Zn, Ni and Cd.
Databáze: GreenFILE