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Recycling of Contaminated Marine Sediment and Industrial By-Products through Combined Stabilization/Solidification and Granulation Treatment

Todaro, Francesco ; Colangelo, Francesco ; De Gisi, Sabino ; Farina, Ilenia ; Ferone, Claudio ; Labianca, Claudia ; Petrella, Andrea ; Cioffi, Raffaele ; Notarnicola, Michele

Materials, 2023-03, Vol.16 (6), p.2399 [Periódico revisado por pares]

Switzerland: MDPI AG

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Título:
Recycling of Contaminated Marine Sediment and Industrial By-Products through Combined Stabilization/Solidification and Granulation Treatment
Autor: Todaro, Francesco ; Colangelo, Francesco ; De Gisi, Sabino ; Farina, Ilenia ; Ferone, Claudio ; Labianca, Claudia ; Petrella, Andrea ; Cioffi, Raffaele ; Notarnicola, Michele
Assuntos: Aggregates ; Blast furnace chemistry ; Blast furnace slags ; By products ; Byproducts ; Cancer ; Cement ; cement-free stabilization/solidification ; Chemotherapy ; Contaminated sediments ; Contamination ; Fluidizing ; Fly ash ; geopolymer ; Geopolymers ; Granulation ; Granulators ; green remediation ; Leaching ; Lightweight ; Marine sediments ; Materials recovery ; metal leachability ; Mineralogy ; Organic compounds ; Organic contaminants ; Particle size ; Pavement construction ; Pollutants ; Polymerization ; Recycling ; Recycling (Waste, etc.) ; Sediments ; Silica ; Solidification ; Stabilization ; United Kingdom ; waste valorization ; wet/cold granulation
É parte de: Materials, 2023-03, Vol.16 (6), p.2399
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Stabilization/solidification (S/S) is becoming increasingly important, as it allows the remediation of contaminated sediments and their recovery into materials for civil engineering. This research proposes a cement-free cold granulation process for manufactured low-cost aggregates from marine sediments contaminated with organic compounds and metals. After the chemo-physical characterization of the study materials, two mix designs were prepared in a rotary plate granulator by adding two industrial by-products as geopolymer precursors, coal fly ash (CFA) and Blast Furnace Slag (BFS), but also alkaline activation solutions, water, and a fluidizer. The results indicated that sediments treated with mix 1 (i.e., with a higher percentage of water and fluidifier) represent the optimal solution in terms of metal leachability. The metal leachability was strictly influenced by aggregates' porosity, density, and microstructure. The technical performance (such as the aggregate impact value > 30%) suggested the use of granules as lightweight aggregates for pavement construction. The results indicated that cold granulation represents a sustainable solution to recycling contaminated marine sediments, CFA, and BFS into lightweight artificial aggregates.
Editor: Switzerland: MDPI AG
Idioma: Inglês

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Recycling of Contaminated Marine Sediment and Industrial By-Products through Combined Stabilization/Solidification and Granulation Treatment

Todaro, Francesco ; Colangelo, Francesco ; De Gisi, Sabino ; Farina, Ilenia ; Ferone, Claudio ; Labianca, Claudia ; Petrella, Andrea ; Cioffi, Raffaele ; Notarnicola, Michele

Switzerland: MDPI AG

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