Abstract
Purpose
China is the world’s largest producer and consumer of refined and reclaimed copper because of the rapid economic and industrial development of this country. However, only a few studies have analyzed the environmental impact of China’s copper industry. The current study analyzes the life cycle environmental impact of copper production in China.
Methods
A life cycle impact assessment using the ReCiPe method was conducted to estimate the environmental impact of refined and reclaimed copper production in China. Uncertainty analysis was also performed based on the Monte-Carlo simulation.
Results and discussion
The environmental impact of refined copper was higher than that of reclaimed copper in almost all categories except for human toxicity because of the direct atmospheric arsenic emission during the copper recycling stage. The overall environmental impact for the refined copper production was mainly attributed to metal depletion, freshwater ecotoxicity, marine ecotoxicity, and water depletion potential impact. By contrast, that for the reclaimed copper production was mainly caused by human toxicity impact.
Conclusions
Results show that the reclaimed copper scenario had approximately 59 to 99% more environmental benefits than those of the refined copper scenario in most key categories except for human toxicity, in which a similar environmental burden was observed between both scenarios. The key factors that reduce the overall environmental impact for China’s copper industry include decreasing direct heavy metal emissions in air and water, increasing the national recycling rate of copper, improving electricity consumption efficiency, replacing coal with clean energy sources for electricity production, and optimizing the efficiency of copper ore mining and consumption.
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Acknowledgments
We gratefully acknowledge financial support from the Thirteen-Five national key research and development program (Grant nos. 2017YFF0206702;2017YFF0211605), National Natural Science Foundation of China (Grant nos. 71671105), and the Institute of the Fundamental Research Funds of Shandong University (2015JC016).
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Responsible editor: Zuoren Nie
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Hong, J., Chen, Y., Liu, J. et al. Life cycle assessment of copper production: a case study in China. Int J Life Cycle Assess 23, 1814–1824 (2018). https://doi.org/10.1007/s11367-017-1405-9
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DOI: https://doi.org/10.1007/s11367-017-1405-9