Willow (salix viminalis l.) in purifying sewage sludge treated soils
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Date
2012
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
Willow is a plant that can be cultivated in contaminated
soils because of its ability to take up harmful substances
and accumulate it in aboveground biomass. Fast development of
big agglomerations in developing world, increased consumption
and need of mankind lead to production of huge amounts of wastes
that are stored at landfill sites. The free surface of landfill
sites is decreasing year by year. There is no enough place to store
wastes. The part of wastes could be reused without wasting
its beneficial properties. Sewage sludge is an inevitable product
of waste treatment containing major contaminants such as: PAH
(Polycyclic Aromatic Hydrocarbons), polychlorinated biphenyls,
polyphenols, polychlorinated dibenzodioxins and heavy metals
which restricts its use in agriculture. On the other hand, it contains
appreciable substances needed in normal plant growth. Willow
could be used in Poland as source of biomass to produce
renewable energy. Poland is obliged to increase the contribution
of renewable source of energy in energetic balance in accordance
to the 3x rule. This plant gives many possibilities especially in
natural habitat. Its properties allow willow to be fertilized with
sewage sludge. application of sewage sludge seems an efficient
method of its management.
Keywords
heavy metals, phytoremediation, sewage sludge, willow
Citation
Polish Journal of Agronomy
2012, 9, 3–6