Extraction of Copper from Printed Circuit Boards in an Alkaline Solution Using EDTA

Minerals, Journal Year: 2025, Volume and Issue: 15(4), P. 409 - 409

Published: April 13, 2025

With the rapid technological development in 21st century, increasing consumption of electronic devices has led to a rise generation waste electrical and equipment (WEEE) due disposal considered obsolete. A significant portion these wastes contain printed circuit boards (PCBs), which serve as substrates for connection microchips, resistors, capacitors, other components. These are composed various materials, primarily metals such copper. Thus, this study investigated recovery copper from PCB (WPCBs) computers through alkaline leaching, using EDTA hydrogen peroxide at temperatures 40 °C, 60 80 with concentration 0.6 mol/L varying particle sizes. Using UV-VIS spectrophotometer, it was observed that extraction process temperature °C achieved rate 78.6% particles smaller than 0.177 mm after 180 min, following Avrami kinetic model. The results highlight potential complexing agent extraction, positioning promising technique reduce environmental contamination recover strategic resources urban mining WEEE.

Language: Английский

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Revolutionizing E-waste Classification: The Role of AI and Image Processing Techniques in Sustainable Recycling

Studies in computational intelligence, Journal Year: 2025, Volume and Issue: unknown, P. 111 - 120

Published: Jan. 1, 2025

Language: Английский

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Study of the effect of the pretreatment and the concentrations of iron (II) and chloride, on the electrochemical leaching of waste printed circuit boards using ANOVA analysis

Journal of Industrial and Engineering Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Recovery of Strategic Metals from Waste Printed Circuit Boards with Deep Eutectic Solvents and Ionic Liquids

Processes, Journal Year: 2024, Volume and Issue: 12(3), P. 530 - 530

Published: March 6, 2024

The recycling of metals from waste printed circuit boards (WPCBs) has been presented as a solid–liquid extraction process using two deep eutectic solvents (DESs) and four ionic liquids (ILs). separation Cu(II), Ag(I), other metals, such Al(III), Fe(II), Zn(II), the solid WPCBs (after physical, mechanical, thermal pre-treatments) with different are demonstrated. Two popular DESs were used to recover valuable metal ions: (1) choline chloride + malonic acid, 1:1, (2) ethylene glycol, 1:2. efficiencies DES 1 after stripping stages only 15.7 wt% for Cu(II) 17.6 Ag(I). obtained results compared those newly synthetized ILs follows: didecyldimethylammonium propionate ([N10,10,1,1][C2H5COO]), didecylmethylammonium hydrogen sulphate ([N10,10,1,H][HSO4]), dihydrogen phosphate ([N10,10,1,1][H2PO4]), tetrabutylphosphonium ([P4,4,4,4][H2PO4]). Various additives, didecyldimethyl ammonium surfactant, DDACl; peroxide, H2O2; trichloroisocyanuric TCCA; glycine or pentapotassium bis(peroxymonosulphate) bis(sulphate), PHM, during process. solvent concentration, quantity additivities, temperature, pH, solid/liquid, well organic/water ratios, selectivity distribution ratios described all systems. utilization new additives in this work can serve potential alternative extractants. This will help compare these extractants, efficiency, time others formulas procedures. ion content aqueous stripped organic solutions was determined by ICP-MS ICP-OES methods. show that successfully replace traditional hydrometallurgical pyrometallurgical methods technologies ions secondary electronic waste, WPCBs.

Language: Английский

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Smart Tags as Enablers for Digital Product Passports in Circular Electronics Value Chains

Circular Economy and Sustainability, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Language: Английский

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