Short-term evolution of physico-chemical properties of Technosols made from contaminated soils by pyritic sludge

Short-term evolution of physico-chemical properties of Technosols made from contaminated soils by pyritic sludge

Abstract The aim of this study was to evaluate, at short term, the physico-chemical and biological quality of residually contaminated soils after the Aznalcóllar mine spill and treated with “tailor-made Technosols”. Two Technosols with different properties (T4 and T6) were used as treatments. Both a...

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Veröffentlicht in:Revista de ciências agrárias 2022-12, Vol.45 (4), p.1011-1020
Hauptverfasser: Aguilar-Garrido, Antonio, Paniagua-López, Mario, Romero-Freire, Ana, Garzón, Francisco Javier Martínez, Ondoño, Emilia Fernández, Peinado, Francisco José Martín
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AGRICULTURE, MULTIDISCIPLINARY
AGRONOMY
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container_end_page 1020
container_issue 4
container_start_page 1011
container_title Revista de ciências agrárias
container_volume 45
creator Aguilar-Garrido, Antonio
Paniagua-López, Mario
Romero-Freire, Ana
Garzón, Francisco Javier Martínez
Ondoño, Emilia Fernández
Peinado, Francisco José Martín
description Abstract The aim of this study was to evaluate, at short term, the physico-chemical and biological quality of residually contaminated soils after the Aznalcóllar mine spill and treated with “tailor-made Technosols”. Two Technosols with different properties (T4 and T6) were used as treatments. Both are composed of ex-situ contaminated soil and two wastes from mining (sludge rich in iron oxyhydroxides and marble sludge); and T4 by a waste from agro-industry (solid olive-mill by-product) and T6 by one from urban activity (vermicompost from gardening). After 6 months of application, samples of Technosols and treated contaminated soils were characterised (soil properties, total, soluble and available concentrations of potentially harmful elements (PHEs), and toxicity bioassay with Lactuca sativa L.) and compared with baseline conditions. Some soils in the Guadiamar Green Corridor presented a significant environmental and human health risk due to their extreme characteristics (pH
doi_str_mv 10.19084/rca.28744
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After only six months, the application of Technosols on these soils has led to a significant improvement in their physico-chemical and biological properties (pH neutralisation, reduction of mobility PHEs and enrichment in organic carbon). 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AGRONOMY
title Short-term evolution of physico-chemical properties of Technosols made from contaminated soils by pyritic sludge
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