PJA     
      ZESZYT Nr  9/ 2012    Abstrakty
      Volume No. 9/2012     Abstracts

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1. Willow (Salix viminalis L.) in purifying sewage sludge treated soils
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Anna Jama, Władysław Nowak

Abstract.
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 landfi ll sites. The surface of landfi ll sites is decreasing year by year. There is no enough place to store it. The part of wastes could be reused without wasting its benefi cial 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. The problem of application of sewage sludge seems an effi cient method
of its management.

key words: 
heavy metals, phytoremediation, sewage sludge, willow