Recycling PCBs for nanoparticles production with potential applications in cosmetics, cement manufacturing, and CO2 capture

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management Pub Date : 2024-11-23 DOI:10.1016/j.wasman.2024.11.018

Lídia Cunha , Joana Monteiro , Aurora Futuro , Maria João Regufe , José Soeiro , Rui Sousa

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引用次数: 0

Abstract

Electronic waste (e-waste) is a global problem, and many countries have established laws and regulations to promote its proper disposal and recycling. E-waste contains a significant content of printed circuit boards (PCBs), composed of metals and other valuable metals that may become scarce in Earth’s crust – Copper (Cu), nickel (Ni), gold (Au), silver (Ag), palladium (Pd), and others. The main objective of this review is to explore the potential for producing nanoparticles (NPs) from the metals extracted through PCB recycling, with applications in the cosmetics, cement manufacturing, and carbon dioxide (CO₂) capture industries. For this purpose, the recycling methods for PCBs e-waste, using physical processes (gravity, magnetic, electrostatic separation, and flotation), metallurgical processes (pyrometallurgy and hydrometallurgy), and purification techniques to obtain an enriched metal solution for the subsequent nanoparticle synthesis was performed. The production of NPs is a novel approach to obtain value-added products for industry. Therefore, recent research from pre-treatment of PCBs to NPs production is summarized, aligning with the circular economy principles and sustainable development goals. Towards this end, wasted PCBs can be transformed into valuable materials with innovative and potential applications in cosmetics, cement manufacturing, and carbon dioxide capture, contributing to a more sustainable future.

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回收多氯联苯生产纳米粒子，可用于化妆品、水泥制造和二氧化碳捕获

电子废物（e-waste）是一个全球性问题，许多国家已经制定了相关法律法规，以促进电子废物的妥善处置和回收利用。电子垃圾中含有大量印刷电路板（PCB），其成分包括铜（Cu）、镍（Ni）、金（Au）、银（Ag）、钯（Pd）等地壳中可能变得稀缺的金属和其他有价金属。本综述的主要目的是探讨从多氯联苯回收提取的金属中生产纳米颗粒（NPs）的潜力，并将其应用于化妆品、水泥制造和二氧化碳（CO2）捕集行业。为此，研究人员采用物理过程（重力、磁力、静电分离和浮选）、冶金过程（火法冶金和湿法冶金）和纯化技术，对多氯联苯电子废弃物进行了回收，以获得富集的金属溶液，用于随后的纳米粒子合成。生产纳米粒子是为工业获得高附加值产品的一种新方法。因此，根据循环经济原则和可持续发展目标，总结了从多氯联苯预处理到 NPs 生产的最新研究。为此，废弃的多氯联苯可转化为有价值的材料，在化妆品、水泥制造和二氧化碳捕集方面具有创新和潜在的应用价值，从而为实现更可持续的未来做出贡献。

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来源期刊

Waste management 环境科学-工程：环境

CiteScore

15.60

自引率

6.20%

发文量

492

审稿时长

39 days

期刊介绍： Waste Management is devoted to the presentation and discussion of information on solid wastes,it covers the entire lifecycle of solid. wastes. Scope: Addresses solid wastes in both industrialized and economically developing countries Covers various types of solid wastes, including: Municipal (e.g., residential, institutional, commercial, light industrial) Agricultural Special (e.g., C and D, healthcare, household hazardous wastes, sewage sludge)