Recovery of copper from WPCBs using slurry electrolysis with ionic liquid [BSO3HPy]∙HSO4

Zhang, Yugai; Chen, Mengjun; Tan, Qiuxia; Wang, Bin; Chen, Shu

doi:10.1016/j.hydromet.2017.11.004

Cited by 57 publications

(12 citation statements)

References 27 publications

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“…Zhang et al reported on a green chemical and cost-effective way to recover copper from e-waste utilizing slurry electrolysis with ionic liquid acid (N-butylsulfonate pyridium hydrosulfate [BSO 4 HPy]•HSO 4 ). The ionic liquid replaced sulphuric acid in the slurry electrolysis which showed an improved recovery rate (90.4%), 70.68% current efficiency, 81.69% purity, copper powder of 2.30 µm, and a change in morphology (scattered monocrystalline particles) [117]. Tatariants et al reported on the recovery of copper from e-waste (motherboards, video cards, and random-access memory) to produce antimicrobial copper nanoparticles.…”

Section: Conversion Of Waste Metals Directly To Nanomaterialsmentioning

confidence: 99%

Status of Recovery of Strategic Metals from Spent Secondary Products

et al. 2021

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The need to drive towards sustainable metal resource recovery from end-of-cycle products cannot be overstated. This review attempts to investigate progress in the development of recycling strategies for the recovery of strategic metals, such as precious metals and base metals, from catalytic converters, e-waste, and batteries. Several methods for the recovery of metal resources have been explored for these waste streams, such as pyrometallurgy, hydrometallurgy, and biohydrometallurgy. The results are discussed, and the efficiency of the processes and the chemistry involved are detailed. The conversion of metal waste to high-value nanomaterials is also presented. Process flow diagrams are also presented, where possible, to represent simplified process steps. Despite concerns about environmental effects from processing the metal waste streams, the gains for driving towards a circular economy of these waste streams are enormous. Therefore, the development of greener processes is recommended. In addition, countries need to manage their metal waste streams appropriately and ensure that this becomes part of the formal economic activity and, therefore, becomes regulated.

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Section: Conversion Of Waste Metals Directly To Nanomaterialsmentioning

confidence: 99%

Status of Recovery of Strategic Metals from Spent Secondary Products

et al. 2021

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“…Lee and Mishra [45] were able to recover 90% of iron and 98% of copper in electrical and electronic waste that was pre-treated by using mechanical and thermal methods. Zhang et al [46] developed a more sustainable method of copper recovery from waste printed circuit boards using ionic liquids, and achieved a yield with 98% purity. Another sustainable way to recover precious metals from electronic waste that avoids chemicals is the use of microorganisms, such as Escherichia coli for copper recovery, which had a 95.2% extraction yield [47], and Lactobacillus acidophilus for gold recovery, with an 85% extraction yield [48].…”

Section: Viability Of Weee Recycling Techniquesmentioning

confidence: 99%

Value Generation of Remanufactured Products: Multi-Case Study of Third-Party Companies

et al. 2019

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The importance of reverse logistics has increased owing to environmental factors and recent legislations. In this context, the market for remanufactured goods has become attractive. Manufacturers, retailers, and third-party companies have improved return programs and operations that add value to the return chain for electronic appliances, rather than treating it as a secondary process. The objective of this study is to identify the variables related to value generation in the reverse logistics of electronic products from the perspective of third-party companies. Reverse logistics of electronic products depends much on the context and local regulations; in addition, the fact that there are few studies on developing countries points to an important gap in extant research. This study presents the influence of quality and warranties, processing time, and partnerships between third-party companies, manufacturers, and retailers on the value generation from remanufactured products. These variables are related to optimal results and optimistic expectations for growth among third-party companies. These internal factors, together with an analysis of external factors and product portfolios, complement the scenario description for the cases studied. The main contribution of this study is to highlight the major factors, which are presented in the framework. The lessons learned can be used in other contexts involving third-party companies.

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“…Chen et al used electrolytic technology to recover valuable metals from WPCBs, and improved metal recovery through the reuse of electrolytes and the use of different types of electrolytes. [36][37][38][39] However, this process generates a significant volume of wastewater. The application of bioleaching has also been limited by the low leaching rate of valuable metals.…”

Section: Introductionmentioning

confidence: 99%

Combination of Pyrolysis and Physical Separation to Recover Copper and Tin from Waste Printed Circuit Boards

Wang

Jiao

Qin

et al. 2020

JOM

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Waste printed circuit boards (WPCBs) are an essential component in electronic waste (e-waste), and contain a number of valuable metals (e.g., Cu, Sn) as well as non-metal resources (e.g., brominated epoxy resin). Currently, most of the non-metals are disposed of in landfills, causing environmental problems. In this study, a combination of pyrolysis and physical separation is proposed to recover valuable resources, including both metals and non-metals, from WPCBs. The WPCBs were pyrolyzed at 700°C under a nitrogen atmosphere. Pyrolysis oil and gas can be reused as fuel for the pyrolysis of WPCBs. Metals like copper, tin, and iron in the pyrolysis residues were separated by selective crushing, sieving, gravity separation, and magnetic separation. Finally, rich copper (Cu 82.21%, Sn 1.47%), rich tin (Cu 53.20%, Sn 13.43%), rich iron (Fe > 63%), and non-metal products were obtained, and the total recoveries of copper, tin, and iron were 95%, 86%, and 76%, respectively.

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Recovery of copper from WPCBs using slurry electrolysis with ionic liquid [BSO3HPy]∙HSO4

Cited by 57 publications

References 27 publications

Status of Recovery of Strategic Metals from Spent Secondary Products

Status of Recovery of Strategic Metals from Spent Secondary Products

Value Generation of Remanufactured Products: Multi-Case Study of Third-Party Companies

Combination of Pyrolysis and Physical Separation to Recover Copper and Tin from Waste Printed Circuit Boards

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