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首页> 外文期刊>Journal of Environmental Management >Selective synthesis of CuNi alloys using waste PCB and NiMH battery
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Selective synthesis of CuNi alloys using waste PCB and NiMH battery

机译：使用废PCB和NiMH电池选择性合成CuNi合金

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摘要

The aim of this study is to establish the potential novel approach for the selective synthesis of copper-nickel (CuNi) alloys using two waste streams, printed circuit board (PCB) and nickel-metal hydride (NiMH) batteries. A thermal route is established to synthesise CuNi alloys by using waste PCB, simultaneously as a Cu source and reducing agent from C-bearing polymer and waste NiMH batteries as Ni source. Thermal transformation and reduction studies were carried out at 1500 degrees C under an inert atmosphere. Initial characterization of raw materials was conducted in detail using various analytical techniques. Synthesised CuNi alloys were confirmed with ICP, EDS and XRD analyses. Material ratios of 75-25 wt% and 50-50 wt% of NiMH battery and PCB waste was considered and these range of compositions of e-waste, as raw materials, minimised the slag generation and optimised Ni recovery. Concentration of Nickel in the synthesised alloys was 20-30 wt%. Reduction extent of nickel oxide using PCB as reductant was confirmed by off-gas analysis. This approach has the potential to be implemented in selective synthesis of CuNi alloys instead of using conventional ores/reductant, to achieve target composition of alloys as per application requirements including marine/automotive/electronic industries. This novel approach promises significant benefits to divert e-wastes from landfill and provide sustainable solution for future metal alloy security.
机译：这项研究的目的是建立一种潜在的新颖方法，以使用两种废料流，印刷电路板（PCB）和镍金属氢化物（NiMH）电池选择性合成铜镍（CuNi）合金。建立了一条利用废PCB合成CuNi合金的热途径，该废PCB同时用作Cu源和含C聚合物和NiMH废电池作为Ni源的还原剂。在惰性气氛下于1500摄氏度下进行了热转化和还原研究。使用各种分析技术对原材料进行了初始表征。 ICP，EDS和XRD分析证实了合成的CuNi合金。考虑了NiMH电池和PCB废料的材料比例为75-25 wt％和50-50 wt％，并且这些范围的电子废物（作为原料）的组成范围最小化了炉渣的产生并优化了Ni的回收率。合成合金中镍的浓度为20-30重量％。通过废气分析确认了使用PCB作为还原剂的氧化镍的还原程度。这种方法有可能在CuNi合金的选择性合成中实现，而不是使用常规的矿石/还原剂，以根据包括船舶/汽车/电子行业在内的各种应用要求实现合金的目标成分。这种新颖的方法有望为垃圾填埋场转移电子垃圾带来巨大好处，并为未来的金属合金安全提供可持续的解决方案。

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  • 来源
    《Journal of Environmental Management》 |2019年第15期|145-153|共9页
  • 作者

    Farzana Rifat; Hassan Kamrul; Wang Wei; Sahajwalla Veena;

  • 作者单位

    UNSW Sydney, Sch Mat Sci & Engn, Ctr Sustainable Mat Res & Technol SMaRT, Sydney, NSW 2052, Australia;

    UNSW Sydney, Sch Mat Sci & Engn, Ctr Sustainable Mat Res & Technol SMaRT, Sydney, NSW 2052, Australia;

    UNSW Sydney, Sch Mat Sci & Engn, Ctr Sustainable Mat Res & Technol SMaRT, Sydney, NSW 2052, Australia;

    UNSW Sydney, Sch Mat Sci & Engn, Ctr Sustainable Mat Res & Technol SMaRT, Sydney, NSW 2052, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Spent NiMH battery; Waste PCB; CuNi alloys; Sustainability;

    机译：NiMH废电池;废PCB;CuNi合金;可持续性;

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