Recycling of e-waste power cables using microwave-induced pyrolysis – process characteristics and facile recovery of copper metal

Horikoshi, Satoshi; Hachisuga, Naoki; Serpone, Nick

doi:10.1039/d4ra05602g

RSC Adv.

2024

DOI: 10.1039/d4ra05602g

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Recycling of e-waste power cables using microwave-induced pyrolysis – process characteristics and facile recovery of copper metal

Satoshi Horikoshi,

Naoki Hachisuga,

Nick Serpone

Abstract: Recycling e-wastes using a VVF power cable through a rapid pyrolytic mechanism by microwave radiation is reported, and it is possible to produce copper wire and carbon resources without going through highly toxic intermediates.

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Cited by 3 publications

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Advancements in E-waste recycling technologies: A comprehensive overview of strategies and mechatronics integration for future development

Bhoi

2024

Sustainable Materials and Technologies

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Advancements in E-waste recycling technologies: A comprehensive overview of strategies and mechatronics integration for future development

Bhoi

2024

Sustainable Materials and Technologies

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Polyvinyl chloride applications along with methods for managing its end-of-life items: A review

Mnyango,

Hlangothi

2024

Progress in Rubber, Plastics and Recycling Technology

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Owing to its unique blend of properties, polyvinyl chloride (PVC) has become one of the most important polymers that have been used in everyday life for many years. Its short- and long-term applications span multiple key industries such as building, electrical/electronic insulation, packaging, and healthcare. These industries produce high volumes of PVC solid items that require responsible management when they reach their end-of-life because they are not biodegradable. Simple and affordable methods of diverting this waste from landfills would contribute positively towards combating environmental problems. However, many approaches have been reported in literature and there is a need to collate for easier comparison. For example, some alternative approaches are highly effective in transforming PVC waste into a range of valuable products but are still associated with secondary pollution. This overview covers different facets of virgin solid PVC (rigid, semi-rigid, and flexible), focusing mainly on its importance, global increase in use, and waste’s recyclability. In addition to the pros and cons of different recycling strategies, the influence of specific factors on the expanding PVC market is also considered albeit briefly. Notably, [Formula: see text]50 % of the world’s annual PVC production and utilization capacity is accounted for by PVC items meant for building applications; these items also drive the growth of the PVC recycling market.

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Investigation of Spent Moulding Sand Using Thermal Treatment with Regard to the Possibility of Recovering Quartz Matrix

Łucarz,

Garbacz-Klempka,

Brzeziński

et al. 2024

Materials

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The ongoing sustainable reduction in natural resources is prompting companies to look for materials to reuse that were previously classified as waste. Uses are sought for them either in their existing area of use or in other areas of the economy. In many cases, this is difficult. The aim of this research is to see if there is a possibility of reusing the grain matrix, a major component of spent moulding sand that was perhaps diverted too early as waste to landfill. This study included three samples of spent moulding sand of unknown origin from landfills. A study of the collected materials was carried out to identify and characterise the impurities accumulated on the surface of the matrix grains. Sieve analyses, scanning photographs, and chemical analysis with a scanning microscope were performed. The surface morphology of the samples was assessed using a confocal microscope, and chemical composition analyses were performed using LIBS laser-induced emission spectroscopy LIBS. The thermogravimetric analysis, ignition loss, and gas formability of the tested materials were performed. The tested samples were subjected to high temperatures as the most efficient method of organic waste disposal. The analyses carried out earlier were repeated on the resulting material. It was found that only one of the tested samples, in the case of the application of thermal reclamation of spent moulding sand, allowed for obtaining a grain matrix (quartz sand) of high purity scale for reuse in the foundry industry or after further treatments in other industries. The other wastes analysed require intensive mechanical treatment, which does not guarantee, due to the shape of the grain matrix, the expected purity of the quartz sand or, in the case of intensive mechanical abrasive influences, a satisfactory grain matrix yield.

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Recycling of e-waste power cables using microwave-induced pyrolysis – process characteristics and facile recovery of copper metal

Abstract: Recycling e-wastes using a VVF power cable through a rapid pyrolytic mechanism by microwave radiation is reported, and it is possible to produce copper wire and carbon resources without going through highly toxic intermediates.

Cited by 3 publications

References 16 publications

Advancements in E-waste recycling technologies: A comprehensive overview of strategies and mechatronics integration for future development

Advancements in E-waste recycling technologies: A comprehensive overview of strategies and mechatronics integration for future development

Polyvinyl chloride applications along with methods for managing its end-of-life items: A review

Investigation of Spent Moulding Sand Using Thermal Treatment with Regard to the Possibility of Recovering Quartz Matrix

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