Kinetic Studies of Copper Leaching From E-Waste Using Organic Acids

IF 1.5 4区化学 Q4 CHEMISTRY, PHYSICAL

International Journal of Chemical Kinetics Pub Date : 2025-05-07 DOI:10.1002/kin.21788

Yasmeen Madeeh Abdel-Fatah, Tarek Ali Elbarbary, Ibrahim Ahmed Ibrahim

引用次数: 0

Abstract

The hydrometallurgy processing of copper from electronic waste (e-waste) by citric and malic acids was studied as a friendly leaching process. Influencing factors, for example, contact time, temperature, pulp density, and acid concentration, were studied. These studies revealed that 98.07% of copper can be dissolved by using 0.5 g e-waste/100 mL of 3% citric acid at 70°C for 15 h. Whereas, 100% can be leached by using 0.5 g/100 mL of 1% malic acid at 80°C for 20 h. Also, the mechanism of leaching by these acids was studied and found that the leaching process is performed by acidification and complexion reactions. Finally, kinetic studies of copper leaching were studied using the modified shrinking core models.

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有机酸浸出电子垃圾中铜的动力学研究

研究了柠檬酸和苹果酸湿法冶金处理电子垃圾中铜的友好浸出工艺。研究了接触时间、温度、矿浆密度、酸浓度等影响因素。结果表明，在70℃条件下，0.5 g/100 mL 3%柠檬酸条件下，15 h可溶出98.07%的铜，而在80℃条件下，0.5 g/100 mL 1%苹果酸条件下，20 h可溶出100%的铜。同时，对这些酸的浸出机理进行了研究，发现浸出过程是通过酸化反应和肤色反应进行的。最后，利用改进的收缩岩心模型对铜浸出动力学进行了研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Chemical Kinetics 化学-物理化学

CiteScore

3.30

自引率

6.70%

发文量

审稿时长

3 months

期刊介绍： As the leading archival journal devoted exclusively to chemical kinetics, the International Journal of Chemical Kinetics publishes original research in gas phase, condensed phase, and polymer reaction kinetics, as well as biochemical and surface kinetics. The Journal seeks to be the primary archive for careful experimental measurements of reaction kinetics, in both simple and complex systems. The Journal also presents new developments in applied theoretical kinetics and publishes large kinetic models, and the algorithms and estimates used in these models. These include methods for handling the large reaction networks important in biochemistry, catalysis, and free radical chemistry. In addition, the Journal explores such topics as the quantitative relationships between molecular structure and chemical reactivity, organic/inorganic chemistry and reaction mechanisms, and the reactive chemistry at interfaces.