Electronic scraps – Recovering of valuable materials from parallel wire cables

Araújo, Mishene Christie Pinheiro Bezerra de; Chaves, Arthur Pinto; Espinosa, Denise Crocce Romano; Tenório, Jorge Alberto Soares

doi:10.1016/j.wasman.2007.09.019

Cited by 39 publications

(15 citation statements)

References 17 publications

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“…They contain substantial amounts of valuable metals . Among the various e‐waste sources, electrical cable wires are largely composed of metallic fibers such as copper and aluminum which have high utilization value . Considering economic and environmental safety, reusing these metal fibers from e‐waste rather than dumping them is highly desirable to carry out metal recovery for various electronic and energy‐related applications.…”

Section: Introductionmentioning

confidence: 99%

Utilizing Waste Cable Wires for High‐Performance Fiber‐Based Hybrid Supercapacitors: An Effective Approach to Electronic‐Waste Management

Nagaraju

Sekhar

2017

Advanced Energy Materials

149

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In recent years, electronic waste (e‐waste) such as old cable wires, fans, circuit boards, etc., can be often seen in large piles of leftover in dumping yards. Employing these e‐waste sources for energy storage devices not only increases the economic value but also decreases the reliance on fossil fuels. In this context, waste cable wires are utilized to obtain precious copper (Cu) fibers and used as a cost‐effective current collector for the fabrication of fiber‐based hybrid supercapacitor (FHSC). With the braided Cu fibers, forest‐like nickel oxide nanosheet grafted carbon nanotube coupled copper oxide nanowire arrays (NiO NSs@CNTs@CuO NWAs/Cu fibers) are designed via simple wet‐chemical approaches. As a battery‐type material, the forest‐like NiO NSs@CNTs@CuO NWAs/Cu fiber electrode shows superior electrochemical properties including high specific capacity (230.48 mA h g−1) and cycling stability (82.72%) in aqueous alkaline electrolyte. Moreover, a solid‐state FHSC is also fabricated using forest‐like NiO NSs@CNTs@CuO NWAs/Cu fibers as a positive electrode and activated carbon coated carbon fibers as a negative electrode with a gel electrolyte, which also shows a higher energy and power densities of 26.32 W h kg−1 and 1218.33 W kg−1, respectively. The flexible FHSC is further employed as an energy source for various electronic gadgets, demonstrating its suitability for wearable applications.

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Section: Introductionmentioning

confidence: 99%

Utilizing Waste Cable Wires for High‐Performance Fiber‐Based Hybrid Supercapacitors: An Effective Approach to Electronic‐Waste Management

Nagaraju

Sekhar

2017

Advanced Energy Materials

149

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“…In respect to copper recycling, extensive research has been carried out on copper recovery from electronic waste with physical separation methods Forssberg, 1997, 1999;Lee et al, 2004Lee et al, , 2007Mohabuth and Miles, 2005;Bevilacqua and De Lorenzi, 2008;de Araújo et al, 2008). Also, electrostatic separation has been applied to separate copper from plastic in artificial mixtures, with copper content higher than 50% w/w (Tilmatine et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Recovery of residual copper from low-content tailings derived from waste electrical cable treatment

Anastassakis

Bevilacqua

Lorenzi

2015

International Journal of Mineral Processing

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“…There are several processes to recover metal and plastics from electronic wastes. [6][7][8][9][10][11] After liberation of the materials in the disassembled WEEE through comminuting, the separation of them can then be performed by mechanical/physical methods. The differences on the physical characteristics of materials in nonhomogeneous compounds, such as magnetism, electric conductivity and density, etc., are the bases of the mechanical/physical separation of them.…”

Section: Introductionmentioning

confidence: 99%

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2019

MSEIJ

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Cables, that are the indispensable parts of electrical and electronic industry, consist of plastics, aluminum, and copper. Cables are usually recycled once the electronic apparatus complete their useful lives. The old fashioned way of recovery process is to burn the plastic that covers the wire, and then recover the copper and aluminum. But this technique is extremely harmful to the environment since it releases toxic gases. Waste cables are very important source of raw material in terms of their non-ferrous metal content and it is an obligatory measure to recover these metallic contents both for economical and ecological reasons. The recovery of these metals decreases the danger of global warming. Metals can be infinitely recycled without compensating form their initial quality. Moreover, the recycling procedures generally consume much less energy than primary production methods and its CO 2 emissions are decreased. The aim of this research is to recover copper from waste electrical cables by the application of physical and chemical separation techniques. Waste cables are shredded first to decrease their size and the metallic parts are separated from plastics physically by using gravity and electrostatic separation techniques. Then copper was recovered from metallic part by smelting and refining. As a result of this experimental study, 97.2% of copper in waste cables is recovered and refined copper with 99.6 %Cu content is produced.

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Electronic scraps – Recovering of valuable materials from parallel wire cables

Cited by 39 publications

References 17 publications

Utilizing Waste Cable Wires for High‐Performance Fiber‐Based Hybrid Supercapacitors: An Effective Approach to Electronic‐Waste Management

Utilizing Waste Cable Wires for High‐Performance Fiber‐Based Hybrid Supercapacitors: An Effective Approach to Electronic‐Waste Management

Recovery of residual copper from low-content tailings derived from waste electrical cable treatment

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