Simultaneously tracing the fate of seven metals at a global level with MaTrace-multi
Simultaneously tracing the fate of seven metals at a global level with MaTrace-multi
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使用 MaTrace-multi 在全球范围内同时追踪七种金属的命运
DOI：
10.1111/jiec.13219
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发表时间：
2022
影响因子：
5.9
通讯作者：
Shinichiro Nakamura
中科院分区：
文献类型：
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作者：
Christoph Helbig;Yasushi Kondo;Shinichiro Nakamura
长期使用材料是减少主要材料需求和资源使用对环境影响的关键。金属的回收利用率应仅受重熔过程中不可避免的损失的限制，这些损失是明确定义的废料。然而，在实践中，由于报废产品收集不完整、废物分类不充分、受污染或稀释废料的重熔以及二次材料的减量循环，会发生额外的金属耗散损失。在这里，我们同时追踪Al，Cr，Fe，Ni，Cu，Zn和Pb在行星动态物质流系统MaTrace‐multi中的命运。金属通过采矿、制造、使用阶段、收集、分拣、废料分配、重熔和二次材料分配等过程。我们计算了1年最终需求的金属要求队列的圆度和寿命。镍的寿命最长，为116年（78至205年），而锌的寿命仅为47年（37至61年）。在消散之前，镍的平均使用量为5.13（3.45至8.78），而锌的使用量仅为1.94（1.52至2.47）。我们的研究结果可用于模拟循环经济政策和技术发展对全球金属周期的影响，超出了一次模拟一种金属的研究范围。本文满足http://jie.click/badges上描述的Gold-GoldJIE数据开放性徽章的要求
Keeping materials in use for a long time is key to reducing primary material demand and environmental impacts of resource use. Recycling yields of metals should only be limited by thermodynamically unavoidable losses of the remelting processes for well‐defined scraps. In practice, however, additional dissipative losses for metals occur due to incomplete collection of end‐of‐life products, insufficient waste sorting, remelting of contaminated or diluted scrap, and the downcycling of secondary materials. Here we simultaneously trace the fate of Al, Cr, Fe, Ni, Cu, Zn, and Pb in MaTrace‐multi, a planetary dynamic material flow system. Metals pass the processes mining, fabrication, use‐phase, collection, sorting, scrap allocation, remelting, and secondary material allocation. We calculate the circularity and longevity of the cohort of metal requirements for the final demand of 1 year. Nickel is found to have the best longevity at 116 (78 to 205) years, whereas zinc only has a longevity of 47 (37 to 61) years. While nickel, on average, is used in 5.13 (3.45 to 8.78) applications before dissipation, zinc is used only in 1.94 (1.52 to 2.47) applications. Our study results can be used to model the impacts of circular economy policies and technological developments on global metal cycles beyond the scope of studies modeling one metal at a time. This article met the requirements for a Gold–GoldJIEdata openness badge described at http://jie.click/badges