Dismantling of Waste Printed Circuit Boards with the Simultaneous Recovery of Copper: Experimental Study and Process Modeling
| Autor: | Szabolcs Fogarasi, Árpád Imre-Lucaci, Florica Imre-Lucaci |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Technology
process modeling and simulation Process modeling copper recovery chemistry.chemical_element Article Printed circuit board WPCBs dismantling General Materials Science Total energy Process engineering Microscopy QC120-168.85 business.industry metals dissolution QH201-278.5 economic assessment Engineering (General). Civil engineering (General) Copper TK1-9971 Descriptive and experimental mechanics chemistry visual_art Electronic component visual_art.visual_art_medium Environmental science Electrical engineering. Electronics. Nuclear engineering Leaching (metallurgy) TA1-2040 business Modelling software Electrowinning |
| Zdroj: | Materials, Vol 14, Iss 5186, p 5186 (2021) Materials Volume 14 Issue 18 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14185186 |
| Popis: | The study was carried out with the aim to demonstrate the applicability of a combined chemical–electrochemical process for the dismantling of waste printed circuit boards (WPCBs) created from different types of electronic equipment. The concept implies a simple and less polluting process that allows the chemical dismantling of WPCBs with the simultaneous recovery of copper from the leaching solution and the regeneration of the leaching agent. In order to assess the performance of the dismantling process, various tests were performed on different types of WPCBs using the 0.3 M FeCl3 in 0.5 M HCl leaching system. The experimental results show that, through the leaching process, the electronic components (EC) together with other fractions can be efficiently dismounted from the surface of WPCBs, with the parallel electrowinning of copper from the copper rich leaching solution. In addition, the process was scaled up for the dismantling of 100 kg/h WPCBs and modeled and simulated using process flow modelling software ChemCAD in order to assess the impact of all steps and equipment on the technical and environmental performance of the overall process. According to the results, the dismantling of 1 kg of WPCBs requires a total energy of 0.48 kWh, and the process can be performed with an overall low environmental impact based on the obtained general environmental indexes (GEIs) values. |
| Databáze: | OpenAIRE |
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