We proved efficient removal of potentially toxic metals and reduction of bioavailability of metals that remained in the treated soil below the detection limit by use of soil washing technology with the application of ligand EDTA. We have removed on average 75% lead, 34% zinc and 75 % cadmium from the soil of Upper Meza Valley. The bioaccessibility of lead and zinc in the intestinal phase of human indigestion system has been reduced for 99 and 96%, respectively. With the fertilisation of the soil after the remediation, we achieved its reuse as a substrate for successful plant growth.
Successful growth of plants in the soil after the remediation.
We have prepared a screening of the state of soil pollution in the frame of the project Model of remediation of soil in Upper Meza Valley (Z1-4272).
The results have been published in the following scientific and technical publications:
- FINŽGAR, Neža, JEŽ, Erika, VOGLAR, David, LEŠTAN, Domen. Spatial distribution of metal contamination before and after remediationin the Meza Valley, Slovenia. Geoderma, ISSN 0016-7061. [Print ed.], 2014, vol. 217/218, str. 135-143. http://dx.doi.org/10.1016/j.geoderma.2013.11.011.
- LEŠTAN, Domen, FINŽGAR, Neža, JEŽ, Erika. Pollution and remediation of lead contaminated site in Meza Valley, Slovenia. V: 7th International Workshop on Chemical Bioavailability in the Terrestrial Environment, Nottingham, 3-6 November 2013. Programme and abstracts.
- FINŽGAR, Neža. Onesnaženost tal v Občini Črna. Črjanske cajtnge, december 2011, št. 48, str. 8-9. http://www.crna.si/images/dokumenti/cajtnge/cajtnge_dec11.pdf.
- UDOVIČ, Metka, FINŽGAR, Neža. Kako rešiti onesnažena tla. Gea, ISSN 0353-782X, jun. 2010, letn. 20, str. 26-31.