Land contamination exist in most industrialized countries and is a growing problem in the emerging conomies. In Slovenia one of the most affected locations is Meza Valley, historically contaminated from Pb mining and smelting industry which commenced in 1665 and continued until 1994. Soils from Meza Valley contain highcontents of organic mater, clay and silit therefore physical separation of contaminated fines is not feasible remediation option. On the other hand siol washing using chelating agent EDTA was foun efficient with minor effects on soil properties.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7834233After omission of industrial activity the soils become primary source of pollution. Environmental remediation, only by restricting secondary exposure and without remediation primary source is insufficient.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 3339430Land contamination exist in most industrialized countries and is a growing problem in the emerging conomies. In Slovenia one of the most affected locations is Meza Valley, historically contaminated from Pb mining and smelting industry which commenced in 1665 and continued until 1994. We recentrly developed novel soil remediation method with EDTA recycling and reuse of washing solution in a closed loop. Data from small laboratory scale EDTA extractions were compared with remediation of five soil samples.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7408249In a field experiment on metal contaminated and EDTA-remediated soil we studied plant performance,mycorrhizal associations and prospects of potential re-use of remediated soil as a garden substrate. Two experimental plots of 4 × 1 × 0.3 m were filled, one with remediated and the other with original contaminated soil. Selected cultivars were rotated over the course of 16 months. Pb, Zn, Cd and micronutrient plant uptake was measured and their phytoaccessibilitywas analyzed by the DTPA method. Plant fitnesswas assessed by chlorophyll fluorescence and gas exchange measurements and evaluation of root colonization were analyzed with mycorrhizal fungi. Remediation reduced Pb and Cd concentrations in roots, green parts and fruits in most of the plants. Phytoaccumulation of Zn was reduced in one half of the cultivars. Some plants suffered from Mn deficiency as total soil Mn was reduced 4-fold and phytoaccessibility of micronutrients Cu, Fe and Mn for 54, 26 and 79%, respectively. Plant biomass was reduced. Photosynthetic parameters of plants grown in original and remediated soil were similar, except for the reduction in Spinacia oleracea. The frequency of mycorrhizal colonization in the roots of Pisum sativum was reduced five-fold and no significant changeswere found in Allium cepa roots. Remediation reduced plant uptake of Pb belowthe concentration stipulated by legislation.Measures to reduce plant accumulation of other toxic metals and to revitalize remediated soil are needed.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7407481Pb, Zn, Cd and micronutrient plant uptake was measured and their phytoaccessibilitywas analyzed by the DTPA method. Remediation reduced Pb and Cd concentrations in roots, green parts and fruits in most of the plants. Phytoaccumulation of Zn was reduced in one half of the cultivars.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 6816377