使用超临界甲醇进行统计建模和流程优化,以利用废弃印刷电路板的价值化
Rima Kumari1, Sukha Ranjan Samadder1
1Department of Environmental Science & Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
Journal of environmental management
|June 20, 2025
概括
超临界甲醇有效地回收废弃印刷电路板 (WPCB),达到96%的有机降解. 这种环保的工艺可以回收有价值的金属和甲醇,促进可持续的电子废物管理.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 废弃印刷电路板 (WPCB) 由于其异质组成,因此存在复杂的回收挑战.
- 不当的WPCB管理导致环境污染和资源耗尽.
研究的目的:
- 研究超临界甲醇作为WPCB处理和利用方法.
- 为最大的有机降解效率 (ODE) 优化过程变量.
主要方法:
- 使用Box-Behnken设计来研究和优化关键的过程变量.
- 应用超临界甲醇处理到WPCB.
主要成果:
- 在优化条件下达到约96%的ODE (350°C,90分钟,20毫升/克的比率).
- 在经过处理的WPCB中金属度显著增加,铜达到35.76%.
- 通过自由基树脂分解生成富含化合物的液体产品,回收90%以上的甲醇.
结论:
- 超临界甲醇是一种可行的,环保的方法,用于WPCB树脂处理.
- 闭环过程支持可持续的电子废物回收和资源回收.
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