废弃印刷电路板的 Pyrolytic 城市采矿:一个环境经济分析
Biswajit Debnath1, Soumitra Pati2, Shubha Kayal1
1Chemical Engineering Department, Jadavpur University, Kolkata, India.
概括
废弃印刷电路板 (WPCB) 的热解使有价值的材料可回收,支持循环经济. 这项研究将实验数据与过程模拟,经济分析和生命周期评估相结合,以实现可持续的电子废物管理.
科学领域:
- 材料科学与工程 材料科学与工程
- 环境科学与工程环境科学与工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 由于供应链的低效率,电子废物 (电子废物) 构成了全球环境挑战.
- 废弃印刷电路板 (WPCB) 是一种丰富的有价值材料来源,包括贵金属和稀土金属.
- 热解是一种有前途的技术,用于从WPCB中回收材料,为城市采矿提供了一条途径.
研究的目的:
- 通过热解来研究从WPCB中回收材料.
- 进行WPCB热解的经济和环境可持续性的综合评估.
- 为电子废物回收者,研究人员和政策制定者提供指导方针,以建立循环经济.
主要方法:
- 关于WPCB热解的实验调查.
- 使用Aspen Plus与非平衡动力模型进行过程模拟.
- 使用阿斯经济分析仪和使用SimaPro软件进行生命周期评估 (LCA) 的经济分析.
主要成果:
- 实验产量:75-84重量%的固体残留物,6-13重量%的液体,4-21重量%的气体,与模拟相一致.
- 对于2000/年工厂的经济分析:5130万美元的资本成本,2700万美元的设备成本,2560万美元的运营成本;20%的投资回报率,6年回报率,1.25PI.
- LCA确定了主要影响:全球变暖,化石资源稀缺,臭氧形成,颗粒物和水消耗.
结论:
- 废PCB的 Pyrolytic 城市采矿是资源回收和循环经济整合的可行策略.
- 实验,模拟,经济和LCA的综合方法为WPCB回收提供了一个整体的观点.
- 这些发现为优化电子废物管理和促进可持续资源利用提供了关键数据.
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