Phytoextraction of Heavy Metals by Hemp during Anaerobic Sewage Sludge Management in the Non-Industrial Sites
A. Piotrowska-Cyplik*, Z. Czarnecki
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Institute of Food Technology of Plant Origin, Faculty of Food Technology, Agricultural University of Poznań,
Wojska Polskiego 31, 60-624 Poznań, Poland
Pol. J. Environ. Stud. 2003;12(6):779-784
The aim of our research was to estimate the efficiency of monoaecian fibrous hemp (Cannabis sativa L., “Benico” variety) for heavy metals phytoextraction from soil-sludge substratum during anaerobic sewage sludge management in non-industrial sites. Below are the results from a pot experiment with hemp as a plant which phytoextracts zinc, copper and nickel. On the basis of heavy metals analysis in substratum it was ascertained that an increase of hemp biomass caused thirtyfold reduction of zinc, thirty-fivefold reduction of copper and tenfold reduction of nickel in light soil of sewage sludge fertilized in comparison with their concentration at the beginning of the pot experiment.
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