The use of willow microcuttings for phytoremediation in a copper, zinc and lead contaminated field trial in Shanghai, China

International Journal of Phytoremediation
Michel LabrecqueKankan Shang

Abstract

A phytoremediation approach using willow microcuttings was tested on a large experimental site spiked with Cu, Pb and Zn. The objective was to verify if this approach allows plant establishment and effective extraction of contaminants. The experimental design consisted of four blocks divided into three plots, in which treatments (salts of the three metals) were randomly applied. Each plot was also subdivided to verify the effect of adding diverse compost treatments: no compost, vegetable garden waste compost (Compost 1), food waste compost (Compost 2) and a mix of Composts 1 and 2. Willow microcuttings (Salix matsudana × alba) were scattered on the plots at a density of 60 m-2. Nine months after the implementation, the number of stems developed, yield and concentration of metals in the aerial parts of the willows were measured. The presence of a contaminant did not affect the number of stems developed. However, the presence of Compost 1 had a significant effect on the number of stems produced as well as on the biomass. Among the three metals, Zn was the element found in highest concentration in willow tissues. An estimated minimum 300 g of Zn per hectare per year could be removed using this method.

References

Apr 23, 2003·Environment International·I D Pulford, C Watson
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·D. E. SaltI. Raskin
Jan 24, 2007·Environmental Pollution·Maria Noel Dos Santos UtmazianWalter W Wenzel
Dec 24, 2013·Environmental Science and Pollution Research International·Benoît Cloutier-HurteauFrançois Courchesne
Dec 21, 2016·International Journal of Phytoremediation·François CourchesneMichel Labrecque

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