title: Soil physical characteristics after EDTA washing and amendment with inorganic and organic additives.
abstract: Soil washing has been established as suitable remediation technology, with most research focused on metal removing efficiency and toxic effect on plants, less on the influence on soil physical characteristics, which was the focus of this study. In soil column experiment highly contaminated soil and soil washed with EDTA, mixed with additives (gypsum, hydrogel, manure, peat) were tested. White clover was used as a soil cover. Yield, metal concentration in soil and plant, aggregate fractionation and stability, saturated hydraulic conductivity and soil water retention of the soil were measured. Soil washing decreased metal concentration in soil and plants, but yield of white clover on remediated soil was significantly lower compared to the original soil. Significant differences in water retention characteristics, aggregate fractionation and stability between original and remediated soil have been determined. Gypsum, hydrogel and peat increased plant available water, manure and peat increased yield on remediated soil.
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.
authors.forename: Vesna
authors.initials: V
authors.lastname: Zupanc
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.
authors.forename: Damijana
authors.initials: D
authors.lastname: Kastelec
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.
authors.forename: Domen
authors.initials: D
authors.lastname: Lestan
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia. Electronic address: helena.grcman@bf.uni-lj.si.
authors.forename: Helena
authors.initials: H
authors.lastname: Grcman
mesh_terms: D005591:Chemical Fractionation; D004492:Edetic Acid / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D008670:Metals / Q000032:analysis* / Q000737:chemistry; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis* / Q000737:chemistry
chemical_list: D008670:Metals; D012987:Soil; D012989:Soil Pollutants; D004492:Edetic Acid
keywords: Aggregate stability; Inorganic additives; Organic additives; Plant available water; Soil physical characteristics; Soil washing