Sustainable Utilization of Metals-Processing, Recovery and Recycling

Friedrich, Bernd

doi:10.3390/met9070769

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…• dividing the entire problem to be solved into subproblems that address a specific noise emission rate, in the form of inputting the sound power level A or sound pressure level A, from the point sources of acoustic energy used in the isophone prediction; • for noise sources whose sound power levels A vary over the time period under consideration, an equivalent value for the time period under consideration shall be determined; • for each of the point sources used, the direct propagation of acoustic energy in the outdoor environment, corrected for possible reflections from existing terrain and attenuation from existing objects, shall be addressed; • the resulting noise level at the site under consideration is calculated as a superposition of the effects from the individual elementary sources and the acoustic energy; • only the airborne noise component is considered; • the sound pressure values L pAeq are calculated for the reference time intervals day (6 am-6 pm), evening (6 pm-10 pm), and night (10 pm-6 am) [29,30].…”

Section: Methodology For Calculating Equivalent Noise Levelsmentioning

confidence: 99%

Study of Noise Effect of Slag Storage Technology on Surrounding Environment

Yehorova,

Lumnitzer

2024

Applied Sciences

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The metallurgical sector is one of the important sectors of the Slovak economy. Its integral part is the storage of metallurgical waste, which is accompanied by noise that bothers the inhabitants of the surrounding urban areas. This paper focuses on the analysis of the problem of noise propagation into protected areas located in the vicinity of the metallurgical plant. The paper describes a number of measurements that have been carried out at the slag landfill. Based on these measurements, simulations were performed using a mathematical model, and predictions of noise propagation in the exterior were made. Subsequently, noise reduction measures were proposed. The results obtained by the authors form a methodological basis for addressing such situations, since, during the solution, it was often necessary to deal with non-standard situations that were specific to the area of the technology addressed. This solution was then applied in real practice.

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Section: Methodology For Calculating Equivalent Noise Levelsmentioning

confidence: 99%

Study of Noise Effect of Slag Storage Technology on Surrounding Environment

Yehorova,

Lumnitzer

2024

Applied Sciences

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“…Also, design for recyclability must be incorporated in the product to facilitate recycling at the end of life; for example, by minimizing mixing of materials and facilitating alloy‐to‐alloy recycling or facilitating the separation of materials. Though the cases or relatively abundant materials such as aluminium and steel have been discussed above, these issues are also very relevant for critical materials such as rare earth elements which are increasingly being used today in modern technology (Abdelbaky et al, 2022; Friedrich, 2019). However, mixing of materials may make recycling very inefficient due to the energy required for their separation.…”

Section: Recycling Of Materials—systems Viewmentioning

confidence: 99%

Material recycling in a circular economy—A systems view

Gheewala

2023

WIREs Energy & Environment

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A circular economy is expected to reduce the use of primary resources through the reuse of products, components, and materials. Material recycling, though advantageous in many cases for saving primary resources by diverting them away from the landfill, may have perverse effects when analyzed from a systems perspective considering the entire material life cycle as well as economy‐wide effects of recycling. Using the case of metals, glass, and plastics recycling, the advantages of a systems view including the entire material life cycle in analyzing material recycling are illustrated. The advantages of recycling as compared to virgin production may vary significantly depending of the energy and resource requirements during the recycling process, logistics, and alloying of materials. Expanding the systems view further to analyze the economy‐wide effects of material recycling reveal the possibility of rebound effects which may reduce or even negate its advantages. Sustainable consumption is absolutely essential along with any technological advances to counter the rebound effects that may lead to overshoot. The article demonstrates the importance of considering a systems view incorporating a life cycle perspective and economy‐wide effects in analyzing and trying to maintain the advantages of material recycling.This article is categorized under: Climate and Environment > Circular Economy Emerging Technologies > Materials Climate and Environment > Pollution Prevention

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“…Recently, a special issue of the journal “Metals” devoted to “Sustainable Utilization of Metals‐Processing, Recovery and Recycling” [86] pointed out how recycling alone cannot close the gap with theoretically complete recirculation (Figure 5). In this respect, the sustainable use of metals is pivotal.…”

Section: Inorganic Materials Chemistry As a Pillar For Circularity Inmentioning

confidence: 99%