DOI: 10.5593/SGEM2014/B32/S13.023


M.Urbaniak, A.Wyrwicka, L.Serwecinska, M. Zielinski, W.Toloczko
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-14-8 / ISSN 1314-2704, June 19-25, 2014, Book 3, Vol. 2, 169-174 pp

The use of sewage sludge as a fertilizer for energetic plants is a method for sludge utilization, which could generate double benefits: enhancement of bioenergy production and reduction of CO2 emission, as compared to combustion methods. This kind of sewage sludge utilization enables also reduction of toxic substances concentrations by using natural soil-plant interactions (phytotechnology, rhizodegradation). Despite many years of sewage sludge analyses which have proved that their contain a number of organic pollutants such as polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs), there is no law regulation in Poland concerning their concentrations in soil after sludge application or there is no guideline for limits of the aforementioned compounds in sludge. Although, sewage sludge is commonly used as soil fertilizer for agricultural purpose, green energy production (usually as willow plantations) or for soil recultivation, and thus there is a need to identify the pathways of PCDDs/PCDFs transfer and translocation between the sewage sludge, soil and a plant. Our focus is to recognize the impact which these contaminants may exert on soil as well as on metabolism of willow (Salix sp.) as typical energy plant.

Keywords: PCDD/PCDF, sewage sludge, plant metabolism, Salix sp. 169

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