研究金属铜在柠檬酸和过氧化氢中溶解动力学的转盘法

IF 4.8 2区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Hydrometallurgy Pub Date : 2024-02-07 DOI:10.1016/j.hydromet.2024.106281

Mahmoud Motasim , Salih Aydoğan , Babiker Ali , Tevfik Agacayak

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引用次数: 0

摘要

本研究采用旋转圆盘法研究了金属铜在柠檬酸-过氧化氢溶液中的溶解动力学。研究了柠檬酸和过氧化氢的浓度、搅拌速度、圆盘表面积和温度的影响。双氧水浓度（0.25-1.5 摩尔/升）对铜的溶解速率（毫克/分钟）有很大影响，反应阶数为 0.92，而柠檬酸浓度（0.125-1.5 摩尔/升）的反应阶数为 0.42。反应速率与圆盘面积（A）和圆盘转速的平方根（ω1/2）成正比，正如列维奇方程所预期的那样。在 30-60 °C 的温度范围内，活化能为 33 kJ/mol，与之前研究报告的数值相当。

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Rotating disc method to study the dissolution kinetics of copper metal in citric acid and hydrogen peroxide

This study reports the kinetics of copper metal dissolution in citric acid-hydrogen peroxide solution using the rotating disc method. The effect of the concentration of citric acid as well as hydrogen peroxide, stirring speed, disc surface area, and temperature was investigated. The concentration of hydrogen peroxide (0.25–1.5 mol/L) has a strong effect on the dissolution rate (mg/min) of copper with a reaction order of 0.92, compared to a reaction order of 0.42 with respect to the concentration of citric acid (0.125–1.5 mol/L). The reaction rate is directly proportional to the disc area (A) and square root of the disc rotation speed (ω^1/2), as expected from the Levich equation. The activation energy of 33 kJ/mol, in the temperature range 30-60 °C is also comparable with the values reported in previous studies.

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来源期刊

Hydrometallurgy 工程技术-冶金工程

CiteScore

9.50

自引率

6.40%

发文量

144

审稿时长

3.4 months

期刊介绍： Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro-refining; pre-treatment of ores by roasting or chemical treatments such as halogenation or reduction; recycling of reagents and treatment of effluents.