Sewage sludge (biosolids) management represents a worldwide issue. Due to its valuable prop- erties, approximately one half of the EU production is recovered in agriculture. Nevertheless, growing attention is given to potential negative effects deriving from the presence of harmful pollutants. It is recognized that a (even very detailed) chemical characterization is not able to predict ecotoxicity of a mixture. However, this can be directly measured by bioassays. Actu- ally, the choice of the most suitable tests is still under debate. This paper presents a multilevel characterization protocol of sewage sludge and other organic residues, based on bioassays and chemical-physical-microbiological analyses. The detailed description of the experimental proce- dure includes all the involved steps: the criteria for selecting the organic matrices to be tested and compared; the sample pre-treatment required before the analyses execution; the chemical, physical and microbiological characterisation; the bioassays, grouped in three classes (baseline toxicity; specific mode of action; reactive mode of action); data processing. The novelty of this paper lies in the integrated use of advanced tools, and is based on three pillars: • the direct ecosafety assessment of the matrices to be reused. • the adoption of innovative bioassays and analytical procedures. • the original criteria for data normalization and processing.

To spread or not to spread? Assessing the suitability of sewage sludge and other biogenic wastes for agriculture reuse

Bertanza, Giorgio;abba alessandro;Alias, Carlotta;Amatucci, Achille;Domini, Marta;Feretti, Donatella;Gilioli, Gianni;Mazzoleni, Giovanna;Menghini, Michele;Pedrazzani, Roberta;Simonetto, Anna;Steimberg, Nathalie;Ventura, Vera;Vezzoli, Simona;Zerbini, Ilaria
2024-01-01

Abstract

Sewage sludge (biosolids) management represents a worldwide issue. Due to its valuable prop- erties, approximately one half of the EU production is recovered in agriculture. Nevertheless, growing attention is given to potential negative effects deriving from the presence of harmful pollutants. It is recognized that a (even very detailed) chemical characterization is not able to predict ecotoxicity of a mixture. However, this can be directly measured by bioassays. Actu- ally, the choice of the most suitable tests is still under debate. This paper presents a multilevel characterization protocol of sewage sludge and other organic residues, based on bioassays and chemical-physical-microbiological analyses. The detailed description of the experimental proce- dure includes all the involved steps: the criteria for selecting the organic matrices to be tested and compared; the sample pre-treatment required before the analyses execution; the chemical, physical and microbiological characterisation; the bioassays, grouped in three classes (baseline toxicity; specific mode of action; reactive mode of action); data processing. The novelty of this paper lies in the integrated use of advanced tools, and is based on three pillars: • the direct ecosafety assessment of the matrices to be reused. • the adoption of innovative bioassays and analytical procedures. • the original criteria for data normalization and processing.
File in questo prodotto:
File Dimensione Formato  
2024 - Bertanza - MethodX - To spread or not to spread Assessing the suitability of sewage sludge and other biogenic wastes for agriculture reuse.pdf

accesso aperto

Licenza: Creative commons
Dimensione 2.99 MB
Formato Adobe PDF
2.99 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/592470
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact