Influencing Parameters on the Electrodeposition of Silver from the Effluents of Mirror Industry

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-01-01 DOI:10.4152/pea.2022400604

F. Bounechache, N. Ghemmit-Doulache, C. Bourouis, D. Ramdane-Terbouche

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Abstract

Silver (Ag) is considered as an ancient and durable precious metal that is used in different ways, due to its specific properties. The diversity of its uses has been meeting a growing worldwide demand that exceeds the Ag amount extracted from earth crust (primary resource), where a large part of this metal has been exploited. Due to its toxicity, environmental pollution resulting from industrial plants, and high economic value, Ag recovery from industrial plants (second resource) has become increasingly important for scientists. In this study, we focused on Ag recovery from the effluents of mirror industry. This was done by Ag electrodeposition on an aluminum (Al) electrode surface. This work aimed to study the effect of current intensity (CI), electrolysis time (ET), voltage (V) and temperature (T) parameters on Ag electrodeposition, in order to optimize them. According to the obtained results, the optimal parameters were a CI of 4 A, during an ET of 30 min, at 12.5 V, with a maximum T of 30 ºC. Scanning electron microscope ( SEM) analyses showed a multilayer rich Ag deposit on the Al surface, followed by a cluster of flowers of different sizes originated from reduced Ag 0 .

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镜面工业废水电沉积银的影响因素

银(Ag)被认为是一种古老而耐用的贵金属，由于其特殊的性质，被用于不同的用途。其用途的多样性一直在满足日益增长的全球需求，超过了从地壳(主要资源)中提取的银量，其中大部分金属已被开采。由于其毒性、工业厂房对环境的污染以及较高的经济价值，从工业厂房中回收银(第二资源)越来越受到科学家们的重视。本文主要研究了从镜面工业废水中回收银的方法。这是通过在铝(Al)电极表面上电沉积银来完成的。本工作旨在研究电流强度(CI)、电解时间(ET)、电压(V)和温度(T)等参数对银电沉积的影响，并对其进行优化。根据得到的结果，最佳参数为CI为4 a, ET为30 min，电压为12.5 V，最大温度为30℃。扫描电镜(SEM)分析表明，铝表面有多层富银沉积，其次是由Ag 0还原而成的大小不一的簇状花。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.