Recycling of industrial wastes for value-added applications in clay-based ceramic products: a global review (2015–19)

Contreras, Manuel Acosta; Gázquez, M.J.; Romero, Maximina; Bolı́var, J.P.

doi:10.1016/b978-0-12-818961-0.00005-3

Cited by 10 publications

(5 citation statements)

References 133 publications

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“…53,54 Similarly, iron vanadium slag has lower metal recyclability and is commonly employed in road construction. 55 After primary mining, industrial waste has a low composition of metals. Thus, we compared our results with e-waste.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Following that, the decoked spent catalysts were treated with acid–base reaction media to separate the spent catalyst’s constituent components. The lower recyclability indicates that metal recovery is less efficient due to the leaching agent. , Similarly, iron vanadium slag has lower metal recyclability and is commonly employed in road construction …”

Section: Resultsmentioning

confidence: 99%

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Mapping Recyclability of Industrial Waste for Anthropogenic Circularity: A Circular Economy Approach

Kanwal

Zeng

2021

ACS Sustainable Chem. Eng.

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Recycling industrial waste has become a favorable option to sustain future industrial development under the anthropogenic circularity philosophy. The lack of scientific identification for recycling has seriously declined the treatment and disposal of industrial waste. This study started the primary endeavor to measure the recyclability of industrial waste. It aimed to use the clarified recyclability to support policymakers improve the circular economy of industrial waste, particularly at the metal recycling stage; in the meantime, developing effective strategies and systems for waste management. To achieve that, we defined various metal grades in the selected industrial waste and then combined the grade with the statistical entropy function to form an innovative model for estimating the recyclability. The results suggest that industrial waste exhibiting high recyclability (e.g., red mud) reflects low disorder and eminent recycling; industrial waste that indicates a low recycling value (e.g., gold tailings) offers easy recycling. Moreover, the created recyclability map identified three recycling zones (difficult, moderate, and easy) useful for enhancing recycling. This model and the results could be employed as a method to design strategies and prioritize the recycling list of industrial waste.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mapping Recyclability of Industrial Waste for Anthropogenic Circularity: A Circular Economy Approach

Kanwal

Zeng

2021

ACS Sustainable Chem. Eng.

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“…The incorporation of industrial wastes in clay based-ceramics, as a clay replacement, contributes toward cleaner production practices, and has been addressed by many scientific works during the last decade [6]. Four groups of waste can mainly be determined according to their nature [7,8]: sludges from different industrial processes [9][10][11]; inorganic waste, mainly from mining and metallurgy waste processes [12,13]; organic waste from paper manufacturing plants and also biomass of different biological activities [14][15][16] and ashes, mainly from coal energy production, and municipal solid waste and biomass incineration [9,[17][18][19]. Among all of them, it is important to underline coal fly ash (CFA), which is generated in thermal power plants, typically constituting around 80% of the total ash, and approximately 30% of the mass of coal consumed [20].…”

Section: Introductionmentioning

confidence: 99%

Influence of Unburned Carbon on Environmental-Technical Behaviour of Coal Fly Ash Fired Clay Bricks

et al. 2022

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The incorporation of coal fly ash (CFA) in fired clay bricks (FCBs), as a clay replacement, contributes toward cleaner production practices. CFA disposal is an important issue worldwide due to its huge volume and to its potential negative environmental impacts, and currently does not have a recovery route due to its high concentration in unburned materials. In this study, the impact of the incorporation of two CFA, with different content of unburned carbon, FAA (low LOI) and FAB (high LOI) in FCBs, from a technical and environmental point of view was conducted. Unburned carbon plays an important role on the final properties of FCBs. The thermal decomposition during the firing process promotes an increase of water absorption, decreasing the flexural strength as the porosity increases, although the technical and mechanical properties of samples containing up to 30% FAA and percentages of 20% FAB are acceptable. The leaching behaviour showed an immobilisation of Cr and Se in FCBs while Mo reduced its mobility to values below non-hazardous limits. Acid gas emission values do not exceed the reference emission value, except for SO2 emissions while the level of CO2 emissions must be estimated based on the total annual production of the ceramic factory.

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“…Therefore, cheap alternatives are being sought. In this direction, research activities related to the valorization and/or remediation of mining wastes have increased and are focused on the conservation of natural raw materials under the prism of circular economy principles [10][11][12][13][14]. Industrial production strategies, as well as regional and/or national policies, are required to develop the management of the available resources.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study on the Potential Replacement of Primary Raw Materials in Traditional Ceramics by Clayey Overburden Sterile from the Prosilio Region (Western Macedonia, Greece)

et al. 2021

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The objective of this study was to investigate the valorization potential of clayey overburden sterile materials from lignite-mining activities in the manufacturing of traditional ceramics. This study aims to contribute toward the sustainable management and use of such waste materials in line with the environmental objectives of the 2030 agenda. To assess this issue, clayey steriles were incorporated in a white clay-body at 20, 50, and 80 wt%, whereas reference samples were also formed from the individual raw materials. Laboratory processing of the ceramics was performed by dry pressing loose powder into rectangular samples and firing at 1000 °C for 4 h. Characterization of the raw materials included chemical, mineralogical, and thermal analysis. The fired bodies were tested for their total linear shrinkage, apparent porosity, water absorption, bulk density, and bending strength according to the relevant standards. The microstructural evolution of the final bodies was analyzed by scanning electron microscopy, which observed differences related to the addition of the steriles. The results showed that the tested clayey steriles can be utilized up to 50 wt% as a secondary raw material in the production of ceramic materials (e.g., bricks) with comparable properties to the reference clay-bodies. Furthermore, the color of the final samples changed from white-creamy to reddish as the content of clayey sterile materials increased in the raw mix.

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Recycling of industrial wastes for value-added applications in clay-based ceramic products: a global review (2015–19)

Cited by 10 publications

References 133 publications

Mapping Recyclability of Industrial Waste for Anthropogenic Circularity: A Circular Economy Approach

Mapping Recyclability of Industrial Waste for Anthropogenic Circularity: A Circular Economy Approach

Influence of Unburned Carbon on Environmental-Technical Behaviour of Coal Fly Ash Fired Clay Bricks

Feasibility Study on the Potential Replacement of Primary Raw Materials in Traditional Ceramics by Clayey Overburden Sterile from the Prosilio Region (Western Macedonia, Greece)

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