More than recycling – The potential of the circular economy shown by a case study of the metal working industry

Hagedorn, Wiebke; Jäger, Sebastian; Wieczorek, L.; Kronenberg, Philipp; Greiff, Kathrin; Weber, Sebastian; Röttger, Arne

doi:10.1016/j.jclepro.2022.134439

Cited by 12 publications

(4 citation statements)

References 47 publications

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“…A significant component of this transition involves the recycling of metal materials, which constitute a substantial portion of global industrial production and is a major contributor of greenhouse gases emissions. The ability to efficiently recycle metal materials not only conserves valuable resources but also reduces the need and thus, the environmental footprint associated with mining and primary metal production [2]. Nevertheless, the journey towards a sustainable circular economy in the metal industry is fraught with obstacles and challenges.…”

Section: Introductionmentioning

confidence: 99%

A Methodology Using Monte-Carlo Simulation on Nanoindentation Deconvolution for Metal Classification

Bello Bermejo,

Windmark,

Gutnichenko

et al. 2024

Advances in Transdisciplinary Engineering

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This paper investigates a methodology for the precise statistical deconvolution of hardness properties within various metallic matrix multiphase materials. The central focus is on accurately characterizing mechanical behaviour in the context of complex materials. To meet these objectives, we implemented an approach involving nanoindentation analyses of the selected materials. This technique allowed for the creation of material profiles based on micromechanical properties. Statistical cumulative density function (CDF) deconvolution was employed to disentangle the complex distributions of multiphase material hardness using cross-validation. Throughout the course of this study, several multicomponent CDF combinations were tested, including Weibull, Exponential, and Gaussian distributions. This approach challenges the conventional practice of assuming multiple Gaussian distributions of hardness, revealing the limitations of this approach. In addition, Monte-Carlo simulations were harnessed to generate probability density functions (PDFs) that capture the intricate footprint variations in hardness profiles. By implementing our methodology, we strive to offer a comprehensive and refined approach to materials analysis. This potential for differentiation has the significant implication of investigating the impact of impurities and trace elements on the mechanical properties and thus, machinability of metal materials. The ultimate aim is to enhance their recyclability, thereby advancing the principles of the circular economy and contributing to the sustainable development goals. Our study thus underscores the profound impact of material analysis on environmental sustainability and the efficient use of resources, while offering a fresh perspective on the role of statistics in materials science.

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Section: Introductionmentioning

confidence: 99%

A Methodology Using Monte-Carlo Simulation on Nanoindentation Deconvolution for Metal Classification

Bello Bermejo,

Windmark,

Gutnichenko

et al. 2024

Advances in Transdisciplinary Engineering

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“…The application of circular economy (CE) strategies is increasingly promoted since they are expected to help solve the current challenge of resource depletion in the face of increasing demand for virgin materials and in turn, to minimize or avoid waste generation. 1,2 Metal recovery from waste has been one of the elds under study. This is supported by the increasing societal demand for metals, and the importance of keeping mining reserves for sustainable development.…”

Section: Introductionmentioning

confidence: 99%

Circular economy in hot-dip galvanizing with zinc and iron recovery from spent pickling acids

et al. 2023

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“…However, the current trend is shifting towards the concept of circular economy [7][8][9][10]. The internal or external reinsertion of materials into the production cycle is sought after, aiming to minimize deposition in the environment and consequently avoiding the generation of negative environmental impacts [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Solar Drying of Sludge from a Steel-Wire-Drawing Industry

Matias Gonçalves,

Mendoza-Martinez,

Alves Rocha

et al. 2023

Energies

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Steel is a crucial industrial product with applications in various sectors, such as construction, engineering, and industry. However, the steel industry generates significant waste, contributing to greenhouse gas emissions and environmental challenges. To address this issue, incorporating solid waste, especially sludge with high moisture content, into the steel industry’s operations is essential. This study aimed to construct and test an active indirect solar dryer for reducing the moisture content of sludge from a steel drawing industry. By employing principles of the circular economy and the environmental, social, and governance concept, the drying process showed promising results, achieving approximately 42% moisture reduction. This study involved collection and characterization of industrial sludge, design and assembly of a hybrid active indirect solar dryer, fluid dynamic analysis of the behavior of the air inside the device through CFD Ansys software 2012, tests with a thermographic camera to validate the simulation, and optimization of the sludge drying by calculating the thermal efficiency and drying efficiency of the equipment. The adoption of such drying processes can lead to substantial cost reductions in the transportation, handling, and landfilling of steel-drawing sludge, promoting innovation and aiding global steel industries in achieving their solid waste disposal targets.

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More than recycling – The potential of the circular economy shown by a case study of the metal working industry

Cited by 12 publications

References 47 publications

A Methodology Using Monte-Carlo Simulation on Nanoindentation Deconvolution for Metal Classification

A Methodology Using Monte-Carlo Simulation on Nanoindentation Deconvolution for Metal Classification

Circular economy in hot-dip galvanizing with zinc and iron recovery from spent pickling acids

Solar Drying of Sludge from a Steel-Wire-Drawing Industry

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