Biological remediation treatments improve the health of a mixed contaminated soil before significantly reducing contaminant levels.

Autor: Hidalgo J; Department of Conservation of Natural Resources, Soil Microbial Ecology Group, NEIKER - Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Bizkaia, P812, 48160, Derio, Spain., Artetxe U; Department of Plant Biology and Ecology, University of the Basque Country, UPV/EHU, P.O. Box 644, 48080, Bilbao, Spain., Becerril JM; Department of Plant Biology and Ecology, University of the Basque Country, UPV/EHU, P.O. Box 644, 48080, Bilbao, Spain., Gómez-Sagasti MT; Department of Plant Biology and Ecology, University of the Basque Country, UPV/EHU, P.O. Box 644, 48080, Bilbao, Spain., Epelde L; Department of Conservation of Natural Resources, Soil Microbial Ecology Group, NEIKER - Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Bizkaia, P812, 48160, Derio, Spain., Vilela J; CEA, Environmental Studies Centre, Palacio Zulueta, Paseo de la Senda 2, Vitoria-Gasteiz, Spain., Garbisu C; Department of Conservation of Natural Resources, Soil Microbial Ecology Group, NEIKER - Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Bizkaia, P812, 48160, Derio, Spain. cgarbisu@neiker.eus.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Jan; Vol. 31 (4), pp. 6010-6024. Date of Electronic Publication: 2023 Dec 22.
DOI: 10.1007/s11356-023-31550-0
Abstrakt: The remediation of mixed contaminated soil is challenging as it often requires actions to minimize metal-induced risks while degrading organic contaminants. Here, the effectiveness of different bioremediation strategies, namely, rhizoremediation with native plant species, mycoremediation with Pleurotus ostreatus spent mushroom substrate, and biostimulation with organic by-products (i.e., composted sewage sludge and spent mushroom substrate), for the recovery of a mixed contaminated soil from an abandoned gravel pit was studied. The combination of biostimulation and rhizoremediation led to the most significant increase in soil health, according to microbial indicator values. The application of composted sewage sludge led to the highest reduction in anthracene and polychlorinated biphenyls concentrations. None of the strategies managed to decrease contamination levels below regulatory limits, but they did enhance soil health. It was concluded that the biological remediation treatments improved soil functioning in a short time, before the concentration of soil contaminants was significantly reduced.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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