Recycling detoxified cement asbestos slates in the production of ceramic sanitary wares

Bernasconi, Andrea; Pellegrino, Luca; Vergani, Fabrizio; Campanale, Fabrizio; Marian, Narcisa Mihaela; Galimberti, Lucia; Perotti, Matteo; Viti, Cecilia; Capitani, Giancarlo

doi:10.1016/j.ceramint.2022.09.147

Cited by 13 publications

(7 citation statements)

References 31 publications

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“…DCAP consists of a mixture of glass and Ca-Mg-Al silicates typical of cements, as a result of in-air heat treatment at ~1100 °C of CAS and subsequent 10 min milling in ball mill [ 1 , 2 , 4 ]. The DCAP used here is the same exhaustively investigated by Vergani et al [ 2 ] through a combination of state-of-the-art techniques, including X-ray powder diffraction (XRPD), X-ray fluorescence spectrometry (XRF), dynamic laser scattering (DLS), scanning (SEM), and transmission electron microscope (TEM).…”

Section: Methodsmentioning

confidence: 99%

“…The European Parliament resolution of 14 March 2013 on asbestos-related occupational health threats and prospects for abolishing all existing asbestos (2012/2065(INI)) instead suggests processing with an energy-sustainable detoxification treatment and reusing the deactivated material. If realized, it would protect the natural environment from pollution, minimise the depletion of non-renewable resources, and protect human health from hazards [ 1 , 2 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, a number of recycling routes of thermally treated CAS have been investigated, providing satisfactory results (for a review, see [ 5 ]). Among them, recycling in ceramics is by far the most exploited and one of the most promising (e.g., [ 4 , 6 , 7 ]). However, the amount of product that can be employed in ceramics without compromising the workability of the slurry is quite modest (≤5 wt% [ 4 , 6 ]).…”

Section: Introductionmentioning

confidence: 99%

“…Among them, recycling in ceramics is by far the most exploited and one of the most promising (e.g., [ 4 , 6 , 7 ]). However, the amount of product that can be employed in ceramics without compromising the workability of the slurry is quite modest (≤5 wt% [ 4 , 6 ]).…”

Section: Introductionmentioning

confidence: 99%

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Epoxy Resins for Flooring Applications, an Optimal Host for Recycling Deactivated Cement Asbestos

et al. 2023

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Cement asbestos slates, commonly known as Eternit® and still abundant in private and public buildings, were deactivated through a thermal process. The resulting deactivated cement asbestos powder (DCAP), a mixture of Ca-Mg-Al silicates and glass, was compounded with Pavatekno Gold 200 (PT) and Pavafloor H200/E (PF), two different epoxy resins (bisphenol A epichlorohydrin) for flooring applications. The addition of the DCAP filler to the PF samples causes a slight but acceptable decrease in the relevant mechanical properties (compressive, tensile, and flexural strengths) upon increasing DCAP content. The addition of the DCAP filler to pure epoxy (PT resin) causes a slight decrease in the tensile and flexural strengths with increasing DCAP content, while the compressive strength is almost unaffected, and the Shore hardness increases. The main mechanical properties of the PT samples are significantly better than those of the filler-bearing sample of normal production. Overall, these results suggest that DCAP can be advantageously used as filler in addition to, or in substitution for, commercial barite. In particular, the sample with 20 wt% of DCAP is the best performing in terms of compressive, tensile, and flexural strengths, whereas the sample with 30 wt% of DCAP shows the highest Shore hardness, which is an important property to be considered in flooring applications.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Epoxy Resins for Flooring Applications, an Optimal Host for Recycling Deactivated Cement Asbestos

et al. 2023

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“…This material has been widely used due to a large number of advantages such as its low thermal conductivity, high mechanical resistance, resistance to chemical and biological attacks, in addition to its low cost. These advantages are due to its chemical structure, because it is a double-chain silicate compound, resistant to heat, fire, acids and friction, which, due to its high melting point, is an excellent insulator, [ 4 , [12] , [13] , [14] ]. It has been used mainly in construction materials (roofs, water tanks, pipes), thermal insulation and heat-resistant material in buildings, in industrial processes and in the manufacture of various products for domestic and environmental use, and in the automotive industry in automobile clutches, brakes and transmission parts, [ 1 , 7 , [15] , [16] , [17] , [18] ].…”

Section: Introductionmentioning

confidence: 99%

A critical review of asbestos concentrations in water and air, according to exposure sources

Peña-Castro¹,

Montero-Acosta²,

Saba³

2023

Heliyon

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Life Cycle Assessment (LCA) of ceramic sanitaryware: focus on the production process and analysis of scenario

Desole

Fedele

Gisario

et al. 2023

Int. J. Environ. Sci. Technol.

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The reduction of environmental impact is today the main challenge of the ceramic industry that is always more focusing on materials in line with the principles of economic and environmental sustainability. In this context, this study addresses the implementation of a Life Cycle Assessment (LCA) on the production of ceramic sanitaryware, based on a cradle-to-grave analysis. Specifically, the process was considered from raw materials until the product is manufactured, excluding the disposal phase except for process waste. The analysis of the impact assessment considers three different scenarios: (i) The first examines the current state; (ii) the second considers the recovery of fired waste and water as well as the replacement of firing and annealing ovens with new generation ovens; (iii) the third, in addition to the technologies used in the second, proposes the use of a photovoltaic system to produce green energy and, additionally, a "plant" energy recovery system. The results show how production processes have a considerable impact on the environment, in terms of energy consumption and materials. Moreover, the use of a photovoltaic system together with the recovery of water allows a significant reduction of environmental impacts. In contrast, the crushing processes for the recovery of fired waste worsen the environmental performance of the plant, because of the high consumption of electricity. Therefore, by improving the waste recovery system and adopting the solutions of the third scenario in terms of energy savings, it would be possible to reduce the environmental burden of the production system considerably. At the same time, the use of additional equipment and production processes increases the costs of the manufacturing and has a significant impact on maintenance.

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Recycling detoxified cement asbestos slates in the production of ceramic sanitary wares

Cited by 13 publications

References 31 publications

Epoxy Resins for Flooring Applications, an Optimal Host for Recycling Deactivated Cement Asbestos

Epoxy Resins for Flooring Applications, an Optimal Host for Recycling Deactivated Cement Asbestos

A critical review of asbestos concentrations in water and air, according to exposure sources

Life Cycle Assessment (LCA) of ceramic sanitaryware: focus on the production process and analysis of scenario

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