Naslov
Research the transport of PCBs with leachate water from contaminated soil in karstic area of Croatia

Autori
Hodak Kobasić, Vedranka ; Čalić, Violeta ; Tarnik, Tamara ; Picer, Mladen ; Šangulin, Jadranka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings of International conference on &#8220 ; ; ; Environmental change and rational water use&#8221 ; ; ; , Buenos Aires 29th August-1st September 2005 / - Buenos Aires, 2005

Skup
International conference on &#8220 ; ; ; Environmental change and rational water use&#8221 ; ; ;

Mjesto i datum
Buenos Aires, Argentina, 29.08.2005. - 01.09.2005

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
PCB; procjedna voda; tlo; Hrvatska
(PCB; leachate water; soil; Croatia)

Sažetak
During the recent war in Croatia since 1991.-1995. some parts of karstic area of Croatia have been heavily destroyed and jeopardized by the dangerous wastes. This area deserves the special attention due to porosities of soil and dangers of pollution the water by persistent pollutants. Therefore it is of great significance to determining levels of the persistent organic pollutants in the environment of karstic area. Our group has determined the level of PCBs in the soil around the damaged condenser of E.T.S. Zadar. Results of analysis have indicated significant contamination of the soil. Phytoremediation is one of the possible ways to remedy contaminated soils with PCBs. Precondition for the phytoremediation is the choice of appropriate plant species. This experiment performs under natural climatic conditions, and then analyzed level of total PCBs obtained with particular leachate and influences the rhizosphere of selected plants on their retaining in the soil. The experimental surface comprises of 4 plots. On the every plot have been placed three lysimeters. Each lysimeter was filled with a layer of gravel and layer of contaminated soil in the height of the 15 cm. Range of levels of total PCB expressed as AR 1248 + AR 1254 in the contaminated soil are from 44 to 74 &micro ; ; ; g/g. Under the hole of lysimeter was placed the glass bottle to collect the water which filters through the experimental surface soils. Three plots have been sowed with plants: Arabidopsis thaliana Heynh. (L.), Alfa alfa (L.) and mixture of Mediterranean grasses, and on the fourth plot are present self-grown plants of this climate. In the dry period from the June to the August (plants have been not sowed) some plots were irrigated with the tap water. Samples of the leachates have been filtered due to relatively large quantity of particular substances leached with the water. It means that it is necessary to analyse percolated pollutants in solid and liquid phases of leached water. Through the first irrigation of the plot, in the leachates were obtained concentration of PCBs (below the 3 lysimeters) 6180 &plusmn ; ; ; 1687 (SD) ng/l (ppt), while after the second irrigation, i.e. after the one month, average concentration of PCBs in the leachates were 9092 &plusmn ; ; ; 2463 (SD) ng/l. After sowing grasses and coming of rainy period (the September 2004 to February 2005.) has been followed kinetics of leaching PCBs into water from soil in all investigated lysimaters.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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