Article (Scientific journals)
Effects of ultrasound on the electrochemical cementation of copper onto iron
Aatach, Mohamed; Simão, Miguel Antunes; Gaydardzhiev, Stoyan
2024In Minerals Engineering, 213, p. 108750
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Keywords :
Copper cementation; Deposit morphology; Process intensification; Ultrasound; Acidic solutions; Electrochemical cementation; Low-frequency ultrasound; Chemistry (all)
Abstract :
[en] A laboratory-scale investigation was conducted to study the cementation of copper from a CuSO4 – based acidic solution onto iron balls as sacrificial media under the application of low-frequency ultrasound and under silent conditions. The influence of several parameters such as pH of solution, stirring speed, temperature, ultrasonic frequency was evaluated. The results show that the use of ultrasound improves the kinetics and the achievable copper removal degree when compared to mechanical stirring alone. Under silent conditions, the highest Cu recovery of 83 % was attained after 120 min at temperature of 60 °C, pH 2.0, and a stirring speed of 500 rpm. For a cementation run under same process conditions but assisted by ultrasound, it took less than 30 min to achieve similar recovery efficiency, with maximum recovery of 96 % being reached after 90 min only. SEM observation on the copper deposited onto the surface of the balls suggested notable differences in the morphology, highlighting the effect of ultrasound on the cementation patterns.
Disciplines :
Chemical engineering
Geological, petroleum & mining engineering
Author, co-author :
Aatach, Mohamed  ;  Université de Liège - ULiège > Département ArGEnCo > Traitement et recyclage des matières minérales (y compris les sols)
Simão, Miguel Antunes  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Gaydardzhiev, Stoyan  ;  Université de Liège - ULiège > Département ArGEnCo > Traitement et recyclage des matières minérales (y compris les sols)
Language :
English
Title :
Effects of ultrasound on the electrochemical cementation of copper onto iron
Publication date :
31 May 2024
Journal title :
Minerals Engineering
ISSN :
0892-6875
Publisher :
Elsevier Ltd
Volume :
213
Pages :
108750
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 01 July 2024

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