Some observations on the current Circular Economy model

Michaux, Simon P.; Butcher, Alan R.

doi:10.4324/9781003244196-11

Cited by 3 publications

(2 citation statements)

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“…Circular engineering is an emerging approach aiming to keep products in use longer to address issues faced by the BE, such as the lack of upgradability, flexibility, circularity, sustainability, uncertainty and resilience of our building stocks (Course in Maastricht University and TU Delft). Applying circular engineering in the construction industry will enable us to design a cleaner, healthier and more sustainable world [34,35] by addressing five critical Sustainable Development Goals (SDGs 9-11-12-13 and 17) over the 17 mentioned in the 2030 Agenda [36].…”

Section: Some Arguments In Favourmentioning

confidence: 99%

Is Circular Economy for the Built Environment a Myth or a Real Opportunity?

Charef

2022

Sustainability

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Section: Some Arguments In Favourmentioning

confidence: 99%

Is Circular Economy for the Built Environment a Myth or a Real Opportunity?

Charef

2022

Sustainability

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“…Moreover, transition models (including IAMs and others) are usually "materials blind" too (Michaux, 2021c), in disregarding the physical requirements of materials, the dynamics of mobilization, as well as social implications. Studies on raw material demand induced by the energy transition take pathways as exogenous inputs, and usually analyse the demand for selected years only, e. g., 2050 or 2100 (Kullmann et al, 2021;UBA, 2019;Visser, 2019;Zepf et al, 2014;IRENA, 2022;World Bank, 2020;de Koning et al, 2018;Moreau et al, 2019;Zhang et al, 2023;Rinaldi et al, 2023;Xu et al, 2022).…”

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Mobilizing materials to enable a fast energy transition: a conceptual framework

Desing¹,

Widmer²,

Bardi³

et al. 2023

Preprint

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Limiting climate heating while meeting basic needs of all necessitates eliminating fossil carbon emissions. This paper discusses the dynamics of mobilizing materials required for large-scale deployment of renewable energy, which entail: 1) availability of resources in the environment and technosphere; 2) accessibility, which depends on resource quality and available technologies; 3) processability, which depends on energy availability, processing capacity, and environmental impacts on planetary boundaries; and 4) operability, which depends on social acceptance and geopolitical agreements. Also, materials can be mobilized through four routes: 1) increasing primary production; 2) diverting existing primary production; 3) repurposing existing in-use stocks; and 4) re-mining previous wastes and emissions. The interplay of these enabling factors determines the maximum possible rate of material mobilization and thus of the energy transition itself. This paper presents and discusses a framework to explore joint energy-material transformations, enabling to consider material aspects in transition modelling and guide technological developments.

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From an Environmental Viewpoint Large ICT Networks Infrastructure Equipment must not be Reused

Andrae

2023

Wseas Transactions on Environment and Development

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Circular strategies must and will vary for different product groups. Life Cycle Assessment (LCA) will help show which is the best strategy in any given situation as not all Circular Economy initiatives lead to universal sustainability benefits. There is a misunderstanding that lifetime extension via remanufacturing and refurbishment is ecologically effective for Business’, ’to’, ’Business ICT goods like ICT network infrastructure (ICTNI) products. This is shown herein by typical relations between manufacturing and the use of environmental impact for ICTNI products as a function of the energy efficiency and lifetime of the product at hand and the next corresponding product model. Full LCA would come to the same conclusion, as the ratio between the use stage and the production stage will not change dramatically. To avoid doing very significant harm to the environment, older than 5 years ICTNI products must not be reused. The reasons are that the energy efficiency improvement rate of the following generation of most ICTNI products is constant, the lifetime is usually more than 10 years and the share of manufacturing environmental impact will be relatively low even when low environmental impact electric power is used for the operation.

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Some observations on the current Circular Economy model

Cited by 3 publications

References 0 publications

Is Circular Economy for the Built Environment a Myth or a Real Opportunity?

Is Circular Economy for the Built Environment a Myth or a Real Opportunity?

Mobilizing materials to enable a fast energy transition: a conceptual framework

From an Environmental Viewpoint Large ICT Networks Infrastructure Equipment must not be Reused

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