Copper recycling and scrap availability

Gómez, Fernando Fernández; Guzmán, Juan Ignacio; Tilton, John E.

doi:10.1016/j.resourpol.2007.08.002

Cited by 56 publications

(19 citation statements)

References 9 publications

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“…; Foley and Clark ; Gilbert ; Gomez et al. ; Hojman ; Slade ; US EPA ), we employ PEA to describe market interactions of producers and consumers of primary and secondary material. We make typical assumptions of a reasonably competitive market, including that suppliers are price takers who choose production levels based on selling prices, and buyers are downstream producers or final goods consumers who choose consumption quantities of all goods based on prices.…”

Section: Methodsmentioning

confidence: 99%

“…We model market interactions using partial equilibrium analysis (PEA). Following standard approaches used by researchers in microeconomics and industrial organization (Blomberg and Hellmer 2000;Fisher et al 1972;Foley and Clark 1981;Gilbert 1995;Gomez et al 2007;Hojman 1981;Slade 1980;US EPA 1998), we employ PEA to describe market interactions of producers and consumers of primary and secondary material. We make typical assumptions of a reasonably competitive market, including that suppliers are price takers who choose production levels based on selling prices, and buyers are downstream producers or final goods consumers who choose consumption quantities of all goods based on prices.…”

Section: Basic Modeling Approachmentioning

confidence: 99%

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A Market‐Based Framework for Quantifying Displaced Production from Recycling or Reuse

Zink

Geyer

Startz³

2015

J of Industrial Ecology

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Summary The most significant environmental benefit of recycling or reusing a wide range of products and materials is typically the potential to displace primary material production; lack of displacement significantly reduces the environmental benefits of these activities. Because no consensus method to estimate displacement rate has emerged, environmental assessments have tended to assume that displacement occurs on a one‐to‐one basis. However, displaced production is a complex phenomenon governed primarily by market mechanisms, rather than physical relationships. This article advances the understanding of displacement by presenting a market‐based framework describing the displacement relationship and a methodology for quantifying displacement rate based on partial equilibrium modeling. Using this methodology, a general symbolic equation for displacement rate after an increase in recycling is derived. The model highlights the market mechanisms that govern displaced production and identifies five price response parameters that affect displacement rate. Results suggest that one‐to‐one displacement occurs only under specific parameter restrictions that are unlikely in competitive commodity markets, but zero displacement is possible if secondary materials are poor substitutes for primary materials; displacement is likely to be reduced if secondary materials have inferior technical properties. The presented methodology can be generally applied to any system in which recycled or reused materials are substitutes or complements for primary materials. Implications for improving recycling and reuse efficacy and environmental assessment methodology are discussed, and suggestions are presented for expanding the displacement methodology in future research.

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Section: Methodsmentioning

confidence: 99%

Section: Basic Modeling Approachmentioning

confidence: 99%

A Market‐Based Framework for Quantifying Displaced Production from Recycling or Reuse

Zink

Geyer

Startz³

2015

J of Industrial Ecology

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“…Although this study assumes constant recycling rates over time, these will change, due to various factors, such as the price of primary resources [66]. By considering such parameter changes, a more reliable estimation of time-series primary resource use, and consequently, an improved calculation of characterization factors, can be achieved.…”

Section: Discussionmentioning

confidence: 99%

Calculation of Characterization Factors of Mineral Resources Considering Future Primary Resource Use Changes: A Comparison between Iron and Copper

Yokoi¹,

Nakatani²,

Moriguchi³

2018

Sustainability

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Abstract:The future availability of mineral resources has attracted much attention; therefore, a quantitative evaluation of the potential impacts of resource use on future availability is important. Although the surplus cost model is often recommended among the existing endpoint characterization models of mineral resources, it has a shortcoming as it does not consider the changes in future primary resource use. This paper introduces a new characterization model considering future primary resource use changes, due to future changes in total demand and secondary resource use. Using material flow analysis, this study estimated time-series primary resource use for iron and copper for five shared socioeconomic pathways (SSPs) and a constant total demand scenario. New characterization factors, i.e., demand change-based surplus costs (DCSC), are calculated for each resource. In all of the SSPs, the calculated DCSCs are larger than the conventional surplus costs (SC) for both iron and copper. The DCSC, relative to the SC of copper, is larger than that of iron for all of the SSPs, which suggests that the potential impacts of copper use, relative to iron, will be underestimated, unless future primary resource use changes are considered. In calculating DCSC for other resources, it is important to choose an appropriate approach for forecasting future total demands.

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“…According to this result, Chinese copper stock volume of social consumption will reach 90 million tons in 2020. The available flow probably accounts for about 60% of the total stock (Fernando, 2007), indicating a coming rapid growth of secondary copper utilization in China. This paper argues that Chinese primary copper trend will be flat, and will take inverted "U" shape variation in the future.…”

Section: Data and Analysismentioning

confidence: 99%

Sustainable Development and Utilization of Mineral Resources: Primary Copper and Secondary Copper

Wang

Liu

2014

Acta Geologica Sinica (Eng)

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Copper recycling and scrap availability

Cited by 56 publications

References 9 publications

A Market‐Based Framework for Quantifying Displaced Production from Recycling or Reuse

A Market‐Based Framework for Quantifying Displaced Production from Recycling or Reuse

Calculation of Characterization Factors of Mineral Resources Considering Future Primary Resource Use Changes: A Comparison between Iron and Copper

Sustainable Development and Utilization of Mineral Resources: Primary Copper and Secondary Copper

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