Journal ArticleDOI
How do properties and heavy metal levels change in soils fertilized with regulated doses of urban sewage sludge in the framework of a real agronomic treatment program
Giuseppe Protano,Fabio Baroni,Luigi Antonello Di Lella,Ambra Mazzoni,Francesco Nannoni,Andrea Papale +5 more
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TLDR
In this article, a field study was performed to assess the variation in chemical and agronomic properties and total and extractable concentrations of heavy metals in soils fertilized with regulated doses of urban sewage sludge (USS) for 6 consecutive years in the framework of an agrionomic treatment program.Abstract:
This field study was performed to assess the variation in chemical and agronomic properties and total and extractable concentrations of heavy metals in soils fertilized with regulated doses of urban sewage sludge (USS) for 6 consecutive years in the framework of an agronomic treatment program. Chemical and agronomical properties, total contents and extractable concentrations of Cd, Cr, Cu, Hg, Ni, Pb and Zn were determined in agricultural soils treated with USS for 6 consecutive years, agricultural soils cultivated using mineral fertilizers and uncultivated soils representative of the local geochemical background. USS application caused a decrease in pH and an increase in extractable concentrations of Cr, Cu, Pb and Zn. No organic carbon, total nitrogen and total phosphorus enrichment trend was observed in the treated soils due to biodegradation of the organic compounds supplied by USS. The decomposition of USS organic matter was presumably the main process responsible for the pH decrease in the USS-fertilized soils. There was no heavy metal accumulation in treated soils, and total heavy metal contents were below the corresponding maximum threshold concentrations set by European and Italian legislation. Increased availability of Cr, Cu, Pb and Zn was found in treated soils due to an increase in their extractable concentrations in the treatment period. The results of this study suggest that the environmental risks related to the accumulation and availability of heavy metals in agricultural soils fertilized with USS are limited when treatment observes recommended doses in agronomic treatment programs.read more
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Land application of sewage sludge: Response of soil microbial communities and potential spread of antibiotic resistance
TL;DR: The obtained results indicate that the effect of fertilization based on the recommended dose of sewage sludge was not achieved, and a general adverse effect on the tested microbial parameters was observed in the fertilized soil.
Journal ArticleDOI
Is sewage sludge a valuable fertilizer? A soil microbiome and resistome study under field conditions
TL;DR: In this paper, the effect of sewage sludge on the soil physicochemical and microbial parameters, emphasising antibiotic and metal resistance spread, was investigated in a 540-day field study.
Journal ArticleDOI
Experimental study on the movement of heavy metal Zn in paddy soil under different irrigation quota of reclaimed water.
TL;DR: The results showed that with the same irrigation quota, firstly the content of Zn, its variation and the rate of change in soil increased, and hereafter decreased with the increase of soil depth, and finally become stable of reclaimed water.
Journal ArticleDOI
The zebrafish (Danio rerio) embryo-larval contact assay combined with biochemical biomarkers and swimming performance in sewage sludge and hydrochar hazard assessment.
Camilla Della Torre,Giulia Liberatori,Anna Ghilardi,Luca Del Giacco,Monica Puccini,F Ferraro,Sandra Vitolo,Ilaria Corsi +7 more
TL;DR: In this article , the suitability of a contact assay using zebrafish embryo/larvae combined with sub-lethal end-points to evaluate the hazard associated with landfill application of sewage sludge (SS) into a valuable carbonaceous solid known as hydrochar (HC).
Journal ArticleDOI
Aryl hydrocarbon reporter gene bioassay for screening polyhalogenated dibenzo-p-dioxins/furans and dioxin-like polychlorinated biphenyls in hydrochar and sewage sludge.
Giulia Liberatori,Carola Mazzoli,F Ferraro,Lucrezia Sturba,Maria Luisa Vannuccini,Davide Baroni,Peter A. Behnisch,Monica Puccini,Sandra Vitolo,Ilaria Corsi +9 more
TL;DR: The suitability of the AhR reporter gene bioassays to screen the presence of polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs) and dioxin-like polychlorined biphenyls (dl-PCBs) in sewage sludge (SL) and related hydrochar (HC) was investigated as mentioned in this paper .
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Journal ArticleDOI
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