The stripping effect of using high voltage electrical pulses breakage for waste printed circuit boards

Chen, Duan; Han, Jun; Zhao, Shen; Gao, Zhonglin; Qiao, Jinpeng; Gao, Yan

doi:10.1016/j.wasman.2018.06.003

Cited by 39 publications

(11 citation statements)

References 33 publications

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“…Comprehensive mobile collection points should be located in isolation from residential buildings, children's and medical institutions, outside the parking places of transport in places where access roads can be arranged, on the basis of the development and coordination of predesign ones in accordance with the established procedure (permitting documentation, etc.) and design materials and in accordance with Sanitary rules and norms 2.2.1/2.1.1.1200-03 "Sanitary protection zones and sanitary classification of enterprises, structures and other facilities" [3][4][5][6][7][8][9][10][11][12].…”

Section: Resultsmentioning

confidence: 99%

Management of Electronic and Electrical Equipment Waste Collection in Municipalities

et al. 2021

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The article considers the justification of the possibility of organizing a waste management system of electronic and electrical equipment dangerous to human health and the environment and the subsequent use of secondary raw materials based on them. The current state of production sector of collection and disposal of waste of electronic and electrical equipment in the EU and Russia was analyzed. A scheme for the organization of a waste management system for electronic and electrical equipment, including the main methods of organization and stages of the cycle of collection and processing of waste in municipalities, forms of organization of work with the population, a formula for calculating the need for the number of necessary vehicles for mobile reception points, has been proposed. It was concluded that at present there is a real opportunity for the implementation in municipalities of a project to create an organization of a waste management system for electronic and electrical equipment, which does not require significant funds from the municipal budget.

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Section: Resultsmentioning

confidence: 99%

Management of Electronic and Electrical Equipment Waste Collection in Municipalities

et al. 2021

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“…Organic solvent (e.g., DMAc) is heated together with coarse PCB pieces [19] since mechanical pre-treatment is ineffective at liberating metals of relatively coarse size par-ticles [86]. At 100 • C, Han et al [19] reported no delamination of PCBs as the heating temperature is lower than the T g of BERs (i.e., 135 • C).…”

Section: Organic Swellingmentioning

confidence: 99%

“…In HVEP comminution, size reduction is achieved by the generated shock waves. The crushing effect of PCBs can be controlled by manipulating the voltage and the pulse number [86]. With a uniform electrical field, the breakdown is most likely to occur at the copper foil-GFC interface due to the differences in electrical properties [78].…”

Section: Electrical Pre-treatment Techniquesmentioning

confidence: 99%

“…Delamination is observed on HVEP-treated PCBs with a negligible size reduction effect, which is absent for the hammer mill products. On the other hand, the applied energy during HVEP comminution is primarily attributed to the copper foil-GFC interface as compared to the GFC-GFC interface, and this is evidently proven by the larger alteration in the bending strength at the copper foil-GFC interface after HVEP comminution [86]. This implies that selective crushing based on the interface material could be achieved.…”

Section: Electrical Pre-treatment Techniquesmentioning

confidence: 99%

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Assessment of Pre-Treatment Techniques for Coarse Printed Circuit Boards (PCBs) Recycling

et al. 2021

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Waste electrical and electronic equipment or e-waste generation has been skyrocketing over the last decades. This poses waste management and value recovery challenges, especially in developing countries. Printed circuit boards (PCBs) are mainly employed in value recovery operations. Despite the high energy costs of generating crushed and milled particles of the order of several microns, those are employed in conventional hydrometallurgical techniques. Coarse PCB pieces (of order a few centimetres) based value recovery operations are not reported at the industrial scale as the complexities of the internal structure of PCBs limit efficient metal and non-metal separation. Since coarse PCB particles’ pre-treatment is of paramount importance to enhance metal and non-metal separations, thermal, mechanical, chemical and electrical pre-treatment techniques were extensively studied. It is quite evident that a single pre-treatment technique does not result in complete metal liberation and therefore several pre-treatment flowsheets were formulated for coarse PCB particles. Thermal, mechanical and chemical pre-treatments integrated flowsheets were derived and such flowsheets are seldom reported in the e-waste literature. The potential flowsheets need to be assessed considering socio-techno-economic considerations to yield the best available technologies (BAT). In the wider context, the results of this work could be useful for achieving the United Nations sustainable development goals.

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“…Almost the entire range of solid municipal waste needs to be properly disposed of as soon as possible to avoid causing significant damage to the ecosystem. Both the increasing volume of solid domestic waste on the planet and its disposal are an acute problem of global scale for all countries, requiring the use of increasingly efficient and environmentally sound technologies, taking into account the fact that every year its negative impact on the environment only increases [3][4][5][6][7][8]. In order to cope with such amounts of solid municipal waste, significant storage areas and modern technologies for their safe storage are required.…”

Section: Introductionmentioning

confidence: 99%

Plasma Technologies as the Basis for the Development of Russian Waste Processing

et al. 2021

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The article considers the current topic - justification of the possibility of organizing a system for recycling solid domestic and other waste based on plasma technologies and the subsequent use of secondary raw materials based on them. The current state of production sector of collection and disposal of solid domestic and other waste abroad and in Russia was analyzed. There are proposed a scheme of organization of solid domestic and other waste disposal system based on plasma technologies, operable at the under construction enterprise for processing of these wastes. The economic feasibility of this enterprise is justified. It was concluded that although the use of plasma technologies is most beneficial in the energy sector, when introducing plasma plants and creating solid waste disposal plants using these plants, taking into account the financial benefits in obtaining the raw materials and energy generated by them is not the main task, but an additional economic effect. The main thing is to reduce the negative impact of solid municipal waste on the environment and people.

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The stripping effect of using high voltage electrical pulses breakage for waste printed circuit boards

Cited by 39 publications

References 33 publications

Management of Electronic and Electrical Equipment Waste Collection in Municipalities

Management of Electronic and Electrical Equipment Waste Collection in Municipalities

Assessment of Pre-Treatment Techniques for Coarse Printed Circuit Boards (PCBs) Recycling

Plasma Technologies as the Basis for the Development of Russian Waste Processing

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