Vitrification of hazardous wastes from ship recycling: circular economy solutions for asbestos and synthetic vitreous fibers. in Environmental science and pollution research international / Environ Sci Pollut Res Int. 2025 Mar 8. doi: 10.1007/s11356-025-36213-w.

2025

Tipo pubblicazione

Journal Article;

Autori/Collaboratori (9)Vedi tutti...

Pereira NN
Department of Production Engineering, School of Industrial Engineering and Metallurgy at Volta Redonda - EEIMVR - Federal Fluminense University, UFF, Av. dos Trabalhadores 420 - Sala C77, Vila Sta. Cecília, Volta Redonda, RJ, 27255-125, Brazil. newtonpereira@id.uff.br.
de Castro Bertagnolli D
Department of Chemistry, Exact Sciences Institute, Federal Fluminense University, UFF, Rua Desembargador Ellis Hermydio Figueira 783, AterradoVolta Redonda, RJ, 27213-145, Brazil.
da Silva L
Department of Physics, Exact Sciences Institute, Federal Fluminense University, UFF, Rua Desembargador Ellis Hermydio Figueira 783, AterradoVolta Redonda, RJ, 27213-145, Brazil.

et alii...

Abstract

Ship recycling at the end of its useful life presents significant environmental and health challenges due to the presence of hazardous materials, such as asbestos and synthetic vitreous fibers (SVFs). This study aimed to convert SVFs and asbestos into safe, reusable co-products by incorporating them into a glassy matrix. The materials were melted at 1200 °C for 1 h with utilization of niobium pentoxide (Nb(2)O(5)) to lower fusion temperatures. Samples collected from an offshore vessel and platform being recycled in Rio de Janeiro, Brazil, were analyzed using energy-dispersive x-ray spectroscopy (EDS) and scanning electron microscopy (SEM), revealing the presence of SVFs but not asbestos. Seven types of glass were produced, with their non-crystalline, glassy nature confirmed by the presence of an amorphous halo in X-ray diffraction (XRD) and a glass transition observed in differential scanning calorimetry (DSC). These findings demonstrate the potential to transform hazardous waste into value-added products, advancing a circular economy in ship recycling operations.

PMID : 40057642

DOI : 10.1007/s11356-025-36213-w