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E-waste is one of the most hardest and concerning challenges witnessed in the present world owing to the exponential rise in the utilization of electrical and electronic gadgets and machines to either ease our day to day activities or assist us in our professional work. E-waste contributes to about 59.4 metric tons of waste generated annually with only a mere 17% being recycled. It is projected that the E-waste generated would reach 120 million tons annually by the year 2050. In a case where efficient management techniques are not devised, the problems posed by E-waste would get magnified greatly affecting the environment. About 60% of this E-waste is composed of valuable metals like copper, silver, gold and platinum. If left unrecovered, a large part of these valuable metals, which have the potential to be recovered and reused would simply be dumped in landfills. Moreover, mining fresh metals from nature would not only deplete the existing resources but also cause environmental damage resulting in landslides, erosion and flooding. This experimental study is an attempt to recover low value copper metal which is abundantly present in E-waste and to convert it into a copper nanosuspension of substantially higher commercial value. The synthesis of the nanosuspension is carried out in two steps. In the first step metallic copper is treated with hydrochloric acid and hydrogen peroxide to produce a dihydrate salt of copper chloride. In the second step, copper chloride is reduced using L-Ascorbic acid. In the reaction, L-ascorbic acid acts as both a reducing agent and a suspension stabilizer. Finally, the product mixture is centrifuged to obtain the copper nanosuspension. The synthesized copper nanosuspension showed desirable properties after characterization which makes it a potential component for application in many fields. When implemented on a large scale, this process would be very effective in dealing and tackling with the problem of rising generation of E-waste. Such conversion techniques not only encourage sustainable development but also contribute to the circular economy, would prove to safeguard the environment and ensure a secure future for the upcoming generations.

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A Novel Method of Synthesis of Copper Nanosuspension from E-waste

  • 会议论文

  • 发表日期：

    2025年

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  • Anupama V. Joshi,
  • Mihir Patil,
  • Mohammed Afzan,
  • V. Akshay Hariharan

摘要

E-waste is one of the most hardest and concerning challenges witnessed in the present world owing to the exponential rise in the utilization of electrical and electronic gadgets and machines to either ease our day to day activities or assist us in our professional work. E-waste contributes to about 59.4 metric tons of waste generated annually with only a mere 17% being recycled. It is projected that the E-waste generated would reach 120 million tons annually by the year 2050. In a case where efficient management techniques are not devised, the problems posed by E-waste would get magnified greatly affecting the environment. About 60% of this E-waste is composed of valuable metals like copper, silver, gold and platinum. If left unrecovered, a large part of these valuable metals, which have the potential to be recovered and reused would simply be dumped in landfills. Moreover, mining fresh metals from nature would not only deplete the existing resources but also cause environmental damage resulting in landslides, erosion and flooding. This experimental study is an attempt to recover low value copper metal which is abundantly present in E-waste and to convert it into a copper nanosuspension of substantially higher commercial value. The synthesis of the nanosuspension is carried out in two steps. In the first step metallic copper is treated with hydrochloric acid and hydrogen peroxide to produce a dihydrate salt of copper chloride. In the second step, copper chloride is reduced using L-Ascorbic acid. In the reaction, L-ascorbic acid acts as both a reducing agent and a suspension stabilizer. Finally, the product mixture is centrifuged to obtain the copper nanosuspension. The synthesized copper nanosuspension showed desirable properties after characterization which makes it a potential component for application in many fields. When implemented on a large scale, this process would be very effective in dealing and tackling with the problem of rising generation of E-waste. Such conversion techniques not only encourage sustainable development but also contribute to the circular economy, would prove to safeguard the environment and ensure a secure future for the upcoming generations.