This study focuses on the characterization and treatment of an industrial wastewater stream containing glassy enamels with high concentrations of toxic elements. Using integrated analytical techniques (XRPD, XRF, and ICP-MS), both the solid precipitate and the liquid phase were investigated, revealing significant levels of heavy metals such as lead, cadmium, chromium, and nickel. The concentrations detected exceed discharge limits set by EU and EPA regulations, highlighting the need for targeted removal strategies. Various adsorbent materials—hydraulic binders and bleaching earths—were tested to evaluate their effectiveness in selectively removing contaminants. The results show variable efficiency depending on the waste matrix and treatment duration, with some elements demonstrating persistent behavior. The study contributes to the development of sustainable practices for managing complex industrial waste and reducing the environmental impact of highly polluting production processes.
Questo lavoro si concentra sulla caratterizzazione e sul trattamento di un refluo industriale contenente smalti vetrosi con elevate concentrazioni di elementi tossici. Mediante tecniche analitiche integrate (XRPD, XRF e ICP-MS), è stata investigata la composizione mineralogica e chimica della frazione solida precipitata e la porzione liquida rivelando una presenza significativa di metalli pesanti quali piombo, cadmio, cromo e nichel. Le concentrazioni rilevate superano i limiti di scarico previsti dalla normativa UE ed EPA, rendendo necessario l’impiego di strategie di rimozione specifiche. Sono stati testati diversi materiali a capacità adsorbente (legante idraulico e bleaching earths), valutandone l’efficacia nella rimozione selettiva dei contaminanti. I risultati indicano un’efficienza variabile in funzione della matrice e del tempo di trattamento, evidenziando criticità legate alla persistenza di alcuni elementi. Lo studio contribuisce alla definizione di pratiche sostenibili per il trattamento di rifiuti industriali complessi e alla riduzione dell’impatto ambientale di processi produttivi ad alto carico inquinante.
Caratterizzazione di rifiuti ceramici contenenti metalli pesanti: un approccio che unisce XRPD e ICP-MS
CHATZOPOULOS, VALENTINA
2024/2025
Abstract
This study focuses on the characterization and treatment of an industrial wastewater stream containing glassy enamels with high concentrations of toxic elements. Using integrated analytical techniques (XRPD, XRF, and ICP-MS), both the solid precipitate and the liquid phase were investigated, revealing significant levels of heavy metals such as lead, cadmium, chromium, and nickel. The concentrations detected exceed discharge limits set by EU and EPA regulations, highlighting the need for targeted removal strategies. Various adsorbent materials—hydraulic binders and bleaching earths—were tested to evaluate their effectiveness in selectively removing contaminants. The results show variable efficiency depending on the waste matrix and treatment duration, with some elements demonstrating persistent behavior. The study contributes to the development of sustainable practices for managing complex industrial waste and reducing the environmental impact of highly polluting production processes.| File | Dimensione | Formato | |
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CHATZOPOULOS_VALENTINA.pdf
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https://hdl.handle.net/20.500.12608/92682