通过二次材料资源的识别来评估过时手机的回收潜力:一个全面的表征研究
Rima Kumari1, Sukha Ranjan Samadder2
1Department of Environmental Science & Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
Journal of environmental management
|July 14, 2023
概括
回收废弃手机 (WMP) 是城市采矿的关键. 描述表明PCB提供了最高的收入潜力,特别是来自铜和黄金回收,支持循环经济目标.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 金工程 金工程 金工程
背景情况:
- 越来越多的电子废物需要可持续的资源回收战略.
- 城市采矿和循环经济原则推动了对废物回收利用的兴趣.
- 废弃手机 (WMP) 的准确表征对于有效回收至关重要.
研究的目的:
- 进行以回收为导向的WMPs的表征.
- 识别二次材料并估计其回收潜力.
- 为电子废物管理政策提供信息,并促进可持续的材料回收.
主要方法:
- 将WMP拆分为组件:外,电池,显示模块和PCB.
- 使用感应合等离子体 - 光学发射光谱法 (ICP-OES) 进行元素组成分析.
- 使用富里埃变换红外光谱法 (FTIR) 确定聚合物分数.
主要成果:
- 聚乙烯占WMP的16.31%重量,并提供了最高的经济恢复潜力 (>50,000美元/).
- 铜具有最高的回收潜力 (234.39/年,约3317美元/),其次是锡和.
- 在贵金属中,黄金构成最大的经济价值 (76.22%),其次是和银.
结论:
- 黄金矿石是可持续开采贵金属和稀有金属的可行次要来源.
- 基于详细的材料回收见解,可以制定有效的电子废物管理策略.
- 该研究支持通过提高资源效率来推进循环经济模式.
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