循环经济网络动态建模框架:聚乙烯四甲酸 (PET) 包装供应链作为案例研究
Daniel Pert1, Ana Inés Torres1
1Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States.
Industrial & engineering chemistry research
|June 9, 2025
概括
向循环经济过渡需要动态模型. 产品再利用倡议比单纯的回收利用更有效地改善循环,并最大限度地减少供应链中的环境影响.
科学领域:
- 环境科学 环境科学
- 运营研究 运营研究
- 系统工程 系统工程
背景情况:
- 目前的循环经济 (CE) 分析框架往往依赖于稳定状态模型,这些模型对于动态,时间依赖的举措是不够的.
- 循环供应链 (SC) 网络涉及各种各样的代理人,采取各种各样的举措,其中许多举措随着时间的推移而演变.
- 模拟CE倡议的动态性质对于有效的过渡战略至关重要.
研究的目的:
- 使用系统动态 (SD) 方法开发一种通用的模块化框架,用于循环经济网络的动态建模.
- 创建一个原型的循环SC网络,模拟通用行为体和特定的代理人,如制造商,消费者,MRF,回收设施和地球.
- 应用开发的框架来分析美国65年间的聚乙烯二甲 (PET) 塑料包装供应链.
主要方法:
- 利用系统动态 (SD) 方法构建CE网络的动态建模框架.
- 开发了一个通用演员模型,并在循环SC中为五个关键代理人推导了特定的模型.
- 在65年的时间里,在各种场景下应用框架来建模PET塑料包装供应链.
主要成果:
- 由于现有的回收基础设施",减缓循环"的举措,如产品再利用,在提高循环性和减少环境影响方面,比"闭环"的举措 (例如,增加回收) 更有效.
- 重复使用和回收计划的结合使得在最短的时间内实现了最高水平的循环.
- 综合方法消除了在供应链中扩大产能的需要.
结论:
- 动态建模框架对于理解和优化循环经济转型至关重要.
- 产品再利用策略对于改善供应链中的循环性和环境性能至关重要.
- 复用和回收结合的混合方法提供了最有效的途径,以快速和可持续的方式实现高循环性.
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