Simon Gluhar (Author), Anela Kaurin (Author), Dominik Vodnik (Author), Damijana Kastelec (Author), Vesna Zupanc (Author), Domen Leštan (Author)

Abstract

In previous reports large-scale EDTA-based soil washing using ReSoil® technology was demonstrated. In the current study, we established a vegetable garden with nine raised beds (4 × 1 × 0.5 m), three with original (contaminated) soil, three with remediated soil, and three with remediated soil vitalized by addition of vermicompost, earthworms, and rhizosphere inoculum. The garden was managed in 6 rotations between July 2018 and November 2019. Buckwheat was sown first as a green manure followed by spinach, lamb's lettuce, chicory, garlic, onion, leek, lettuce, carrot, kohlrabi and spinach again. Buckwheat growth on the remediated soil was reduced by half. Throughout the gardening process there were no remarkable differences in bulk density, hydraulic conductivity, available water capacity, and aggregate stability of the original and remediated soil. Biomass yield and plant performance, as measured by NDVI, also remained similar regardless of soil treatment. Remediation reduced Pb concentration in edible parts of vegetables from 76 (garlic) to 95% (kohlrabi), Zn concentration from 14 (lettuce) to 76% (first cutting of chicory), and Cd concentration from 33% (carrot) to 91% (leek and second cutting of chicory). The transfer of metals from soil to root and from root to shoot occurred in the order: Pb < Zn < Cd. The bioconcentration of toxic metals in edible plant parts was generally lower in the remediated soils. Application of ReSoil® technology and growing vegetables that exclude metals, especially Cd, has potential for safe food production on remediated soils. Vitalization had little effect on the properties of the remediated soil.

Keywords

čiščenje tal;pranje tal;EDTA;vrtnine;remediacija;očiščena tla;fizikalne lastnosti tal;elementi v sledovih;težke kovine;svinec;cink;kadmij;kemična sestava;varna hrana;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 631.4
COBISS: 68308739 Link will open in a new window
ISSN: 0048-9697
Views: 212
Downloads: 81
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Other data

Secondary language: Slovenian
Secondary keywords: čiščenje tal;pranje tal;EDTA;vrtnine;remediacija;očiščena tla;fizikalne lastnosti tal;elementi v sledovih;težke kovine;svinec;cink;kadmij;kemična sestava;varna hrana;
Type (COBISS): Article
Pages: str. 1-14 (148521)
Issue: ǂVol. ǂ792
Chronology: 2021
DOI: 10.1016/j.scitotenv.2021.148521
ID: 13943482