Environmental-friendly recovery of non-metallic resources from waste printed circuit boards: A review

Qiu, Ruijun; Lin, Mi; Qin, Baojia; Xu, Zhenming; Ruan, Jujun

doi:10.1016/j.jclepro.2020.123738

Cited by 95 publications

(27 citation statements)

References 85 publications

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“…The electrode materials consist of metal oxides, metal salts, metals, etc. [6][7][8][9] , have been applied in rechargeable batteries such as the lead-acid battery (PbO 2 -Pb), nickel-cadmium battery [NiO(OH)-Cd], lithium-ion battery (LiCoO 2 -C, LiFePO 4 -C, etc.). Most of the electrode materials of these batteries belong to inorganic materials, exhibiting high price, heavy metal toxicity, environmental pollution, and degradable recycling, which need further attention for energy storage applications [10,11] .…”

Section: Introductionmentioning

confidence: 99%

Recent research on emerging organic electrode materials for energy storage

Huang¹,

Long²,

Xiao³

et al. 2022

Energy Mater

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Due to the growth of the demand for rechargeable batteries in intelligent terminals, electric vehicles, energy storage, and other markets, electrode materials, as the essential of batteries, have attracted tremendous attention. The research of emerging organic electrode materials in batteries has been boosted recently to their advantages of low cost, environmental friendliness, biodegradability, and designability. This manuscript highlights and classifies several recent studies on organic electrode materials and lists their potential applications in various battery systems. Finally, the challenge and perspective of organic electrode materials are also summarized.

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Section: Introductionmentioning

confidence: 99%

Recent research on emerging organic electrode materials for energy storage

Huang¹,

Long²,

Xiao³

et al. 2022

Energy Mater

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“…According to United Nations estimations, the global output rate of e-waste has been growing by 10% every year and the total production of e-waste has reached more than 50 million tons annually [1,2]. An effective method to resolve the increasingly serious environmental pollution problems is to realize the recycling and reuse of these e-wastes.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Mechanical Properties of High-Durability Polypropylene Composites via Reutilization of SiO2 In-Situ-Synthesized Waste Printed Circuit Board Powder

Tian

et al. 2022

Polymers

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This paper focuses on the characterization of the physico-chemical properties, surface modification, residual copper content and in situ hybrid inorganic particle modification of polypropylene (PP) composites reinforced by waste printed circuit board powder (WPCBP). A series of WPCBP/SiO2 hybrids (TSW) were prepared by a sol–gel method at different pH values. Characterization results revealed the in situ generation of SiO2 on the surface of WPCBP, and showed that with an increase in pH value, the size of SiO2 particles increased gradually and the copper content decreased in the TSW powder. The mechanical properties, oxidation induction time (OIT) and thermal properties of PP composites were improved by reinforcement with TSW, which might be ascribed to the formation of serrated interfaces. This work not only develops a powerful method to enhance the properties of PP/WPCBP composites, but also provides an environmentally sustainable approach to the high-added-value reutilization of WPCBP.

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“…Several other processes were investigated to recover metals from PCBs [6][7][8][9][10][11][12][13][14], but, considering the circular approach of the full recycling concept, even the recovery of the non-metallic fraction of PCBs was studied [10]. Debromination is a necessary treatment before any other recycling process.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study on Gold Recovery from High Grade E-Waste by Thiourea Leaching and Electrowinning

et al. 2021

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The present paper is focused on the extraction of gold from high-grade e-waste, i.e., spent electronic connectors and plates, by leaching and electrowinning. These connectors are usually made up of an alloy covered by a layer of gold; sometimes, in some of them, a plastic part is also present. The applied leaching system consisted of an acid solution of diluted sulfuric acid (0.2 mol/L) with thiourea (20 g/L) as a reagent and ferric sulfate (21.8 g/L) as an oxidant. This system was applied on three different high-grade e-waste, namely: (1) Connectors with the partial gold-plated surface (Au concentration—1139 mg/kg); (2) different types of connectors with some of which with completely gold-plated surface (Au concentration—590 mg/kg); and (3) connectors and plates with the completely gold-plated surface (Au concentration—7900 mg/kg). Gold dissolution yields of 52, 94, and 49% were achieved from the first, second, and third samples, respectively. About 95% of Au recovery was achieved after 1.5 h of electrowinning at a current efficiency of only 4.06% and current consumption of 3.02 kWh/kg of Au from the leach solution of the third sample.

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Environmental-friendly recovery of non-metallic resources from waste printed circuit boards: A review

Cited by 95 publications

References 85 publications

Recent research on emerging organic electrode materials for energy storage

Recent research on emerging organic electrode materials for energy storage

Fabrication and Mechanical Properties of High-Durability Polypropylene Composites via Reutilization of SiO2 In-Situ-Synthesized Waste Printed Circuit Board Powder

Preliminary Study on Gold Recovery from High Grade E-Waste by Thiourea Leaching and Electrowinning

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