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Multilevel cycle of anthropogenic copper
T E Graedel1, D van Beers, M Bertram
1Center for Industrial Ecology, School of Forestry and Environmental Studies, Yale University, New Haven, Connecticut 06511, USA. thomas.graedel@yale.edu
Global copper cycles reveal significant variations in recycling rates among nations. Approximately 53% of discarded copper is recovered, with electronics and vehicles offering the greatest recycling potential.
Area of Science:
- Resource management
- Industrial ecology
- Environmental science
Background:
- Understanding anthropogenic resource cycles is crucial for sustainable management.
- Copper is a vital industrial metal with complex global flows.
Purpose of the Study:
- To characterize the contemporary global copper cycle.
- To analyze copper stocks and flows at country, regional, and global levels.
- To identify key factors influencing copper recycling and disposal.
Main Methods:
- Annual analysis of copper extraction, processing, fabrication, use, discard, recycling, disposal, and dissipation.
- Data aggregation across 56 countries, nine world regions, and the global level.
- Construction of a "best estimate" global copper cycle.
Main Results:
- National economies show twofold differences in copper transformation and recycling rates.
- Electronics, electrical equipment, and vehicles represent high-potential discard flows for copper recycling.
- Globally, 53% of discarded copper was recovered; landfills and mine tailings are major repositories.
- Nearly 30% of copper mining replaced discarded copper.
Conclusions:
- Copper resource management requires country-specific strategies due to economic variations.
- Targeting high-concentration discard flows is key to enhancing copper recycling.
- Sustainable copper management necessitates improved waste management and recycling infrastructure.
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