ENEA, Italian National Agency for New Technologies, Energy, Sustainable Economic Development, Via Anguillarese 301, 00123 Rome, Italy.
ENEA, Italian National Agency for New Technologies, Energy, Sustainable Economic Development, Via Anguillarese 301, 00123 Rome, Italy.
Waste Manag. 2019 Nov;99:22-30. doi: 10.1016/j.wasman.2019.08.011. Epub 2019 Aug 27.
In this paper a full recognition of the different materials and valuable metals constituting mobile phones was performed. To this aim, a sample of 20 end-of-life devices has been dismantled and quantitative and qualitative chemical composition of the individual components was determined. From dismantling operations, it was found that plastics, metals, electronic components, batteries and displays account for 33%, 11%, 23%, 24% and 9% respectively, as a weighted average. Plastic parts of each item were analyzed by spectroscopy and then classified according to the plastic polymer type; it was found that polymeric components of mobile phones were made of five polymers: acrylonitrile-butadienestyrene, polycarbonate, polyurethane, polymethylmethacrylate and silicone. Electronic parts were leached by a twofold aqua regia treatment and the metal composition was determined: 15 elements were identified with concentration >0.2%. On the basis of these results, some considerations about the recycling context of end-of-life mobile phones were performed.
本文对废旧手机中的不同材料和有价值金属进行了全面识别。为此，对 20 个报废设备进行了拆解，并确定了各个组件的定量和定性化学成分。从拆解操作中发现，塑料、金属、电子元件、电池和显示器分别占 33%、11%、23%、24%和 9%，这是加权平均值。对每个物品的塑料部件进行了光谱分析，然后根据塑料聚合物类型进行了分类；结果表明，手机的聚合成分由五种聚合物组成：丙烯腈-丁二烯-苯乙烯、聚碳酸酯、聚氨酯、聚甲基丙烯酸甲酯和硅酮。电子元件通过两次王水浸提处理，确定了金属成分：鉴定出 15 种浓度>0.2%的元素。基于这些结果，对报废手机的回收背景进行了一些考虑。
