Environmentally friendly synthesis of copper nanoparticles from waste printed circuit boards

El-Nasr, Rania Seif; Abdelbasir, Sabah M.; Kamel, Ayman H.; Hassan, Saad S. M.

doi:10.1016/j.seppur.2019.115860

Cited by 78 publications

(26 citation statements)

References 55 publications

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“…Feed, tailing 1, and tailing 2 show an absorption peak at ~ 3430 cm −1 , which represents the O-H stretching vibration band. The peaks at 2965 cm −1 , 2926 cm −1 , and 2870 cm −1 show the presence of CH 3 , C-H, CH 2 vibrations, respectively [49]. The characteristic peak obtained around 1746 cm −1 refers to C-H, while at 1607 cm −1 and 1508 cm −1 represents C=C stretching vibrations [50].…”

Section: Xrd and Ftir Spectra Analysismentioning

confidence: 96%

“…The characteristic peak obtained around 1746 cm −1 refers to C-H, while at 1607 cm −1 and 1508 cm −1 represents C=C stretching vibrations [50]. Tailing 1 shows a shift in peak values at around 1456 cm −1 , 1168 cm −1 ,1038 cm −1 showing the presence of CH 3 , C-O-C, C=O functional group stretching, respectively [49]. The peak corresponding to 736 cm −1 is attributed to aromatic ring vibration.…”

Section: Xrd and Ftir Spectra Analysismentioning

confidence: 97%

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Processing of Discarded Printed Circuit Board Fines via Flotation

Barnwal

Mir

Dhawan

2020

J. Sustain. Metall.

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The recovery of metals from discarded printed circuit boards using environmentally-friendly physical routes is gaining importance. Physical separation of metal values from non-metallic constituents exploits various characteristics of crushed powder such as density, liberation, shape, size, and wettability. However, the generation of fines during grinding/crushing of the printed circuit boards is an unavoidable but essential by-product. The fine fractions are discarded due to the higher amounts of non-metallic fraction and poor separation of metallic values. In this study, the flotation process was studied to separate metallic and non-metallic values without the addition of external additives from the fine fraction of printed circuit boards (< 212 µm). The natural hydrophobic response of plastic and organic matter in fines stabilized the froth without additional reagents. The difference in tapped density for tailing (~ 0.5 g/cm 3 ) and concentrate (~ 2.7 g/cm 3 ) fraction ensures good separation. The metallic fraction increases from 14.3% in the feed to 91.7% in the concentrate. Recovery for metallic values was observed as ~ 72.3% with a purity of ~ 92% and comprised 77.9% Cu, 8.3% Sn, and 5.5% Pb.The contributing editor for this article was Veena Sahajwalla.

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Section: Xrd and Ftir Spectra Analysismentioning

confidence: 96%

Section: Xrd and Ftir Spectra Analysismentioning

confidence: 97%

Processing of Discarded Printed Circuit Board Fines via Flotation

Barnwal

Mir

Dhawan

2020

J. Sustain. Metall.

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“…Another study identified different morphologies of silica nano-fillers (100–500 nm) present in polymer waste (Tran et al, 2017 ). Various metals have also been recovered from pickling wastes, spent catalysts, furnace slag, fly ash, e-waste, and metalized plastic waste (Khaloo et al, 2013 ; Bennett et al, 2016 ; Chaukura et al, 2016 ; Chen et al, 2016 ; El-Nasr et al, 2020 ; Elsayed et al, 2020 ). Aside from being a good source for the recovery of metals, various industrial effluents and bio-wastes have been used for the synthesis of carbon-based nanomaterials (Deng et al, 2016 ; Zhang et al, 2016 ).…”

Section: Waste As Starting Materials For the Production Of Nanoparticmentioning

confidence: 99%

“…The metals recovered from WPCBs can be used to create nanoparticles. Cu from WPCBs has acted as a starting material in the synthesis of Cu nanoparticles (Yousef et al, 2018 ; El-Nasr et al, 2020 ). Figure 2 portrays the morphological features of Cu nanoparticles obtained from WPCBs using the approach by El-Nasr et al ( 2020 ).…”

Section: Synthesis Of Nanoparticles From Recycled Materialsmentioning

confidence: 99%

“…These NPs were prepared from (a) ammoniacal ammonium chloride and (b) ammoniacal ammonium carbonate leachant by ascorbic acid in presence of cetyltrimethylammonium bromide (CTAB) as modifier. These images were reproduced from Seif El-Nasr et al ( 2020 ) under the reproduction license number 4854300796766 provided by Elsevier and Copyright Clearance Center.…”

Section: Synthesis Of Nanoparticles From Recycled Materialsmentioning

confidence: 99%

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Waste-Derived Nanoparticles: Synthesis Approaches, Environmental Applications, and Sustainability Considerations

et al. 2020

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For the past few decades, a plethora of nanoparticles have been produced through various methods and utilized to advance technologies for environmental applications, including water treatment, detection of persistent pollutants, and soil/water remediation, amongst many others. The field of materials science and engineering is increasingly interested in increasing the sustainability of the processes involved in the production of nanoparticles, which motivates the exploration of alternative inputs for nanoparticle production as well as the implementation of green synthesis techniques. Herein, we start by overviewing the general aspects of nanoparticle synthesis from industrial, electric/electronic, and plastic waste. We expand on critical aspects of waste identification as a viable input for the treatment and recovery of metal-and carbon-based nanoparticles. We follow-up by discussing different governing mechanisms involved in the production of nanoparticles, and point to potential inferences throughout the synthesis processes. Next, we provide some examples of waste-derived nanoparticles utilized in a proof-of-concept demonstration of technologies for applications in water quality and safety. We conclude by discussing current challenges from the toxicological and life-cycle perspectives that must be taken into consideration before scale-up manufacturing and implementation of waste-derived nanoparticles.

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E‐Waste Valorization and Resource Recovery

Vishwakarma,

Hait

2023

Management of Electronic Waste

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Environmentally friendly synthesis of copper nanoparticles from waste printed circuit boards

Cited by 78 publications

References 55 publications

Processing of Discarded Printed Circuit Board Fines via Flotation

Processing of Discarded Printed Circuit Board Fines via Flotation

Waste-Derived Nanoparticles: Synthesis Approaches, Environmental Applications, and Sustainability Considerations

E‐Waste Valorization and Resource Recovery

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