{"title":"Removal of Nickel from Electroplating Wastewater by a Combination of Electrodialysis and Electrodeposition","authors":"R. Klishchenko, R. Chebotarova","doi":"10.3103/S1063455X23040070","DOIUrl":null,"url":null,"abstract":"<p>The electroplating industry generates wastewater and solid waste with diverse compositions and numerous components. Different chemical compositions and low concentrations of heavy metals both in solid wastes and in waste and washing waters make it necessary to develop treatment technologies for almost every type of wastewater. In this study, we investigated the extraction of nickel compounds from solid sludge by treatment with 0.1 M sulfuric acid at an acid-to-sludge ratio of 5 : 1, followed by electrodialysis preconcentration and electroreduction to recover nickel from the resulting solution at an electrode. The concentrations of Cu, Zn, and Fe impurity ions do not exceed the maximum permissible values and do not affect the kinetics or productivity of the nickel electrodeposition process. The current yield of nickel at the cathode reaches 96%. Additionally, the introduction of buffer substances enhanced the stability of nickel deposition at the cathode.</p>","PeriodicalId":680,"journal":{"name":"Journal of Water Chemistry and Technology","volume":"45 4","pages":"378 - 382"},"PeriodicalIF":0.5000,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Water Chemistry and Technology","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.3103/S1063455X23040070","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The electroplating industry generates wastewater and solid waste with diverse compositions and numerous components. Different chemical compositions and low concentrations of heavy metals both in solid wastes and in waste and washing waters make it necessary to develop treatment technologies for almost every type of wastewater. In this study, we investigated the extraction of nickel compounds from solid sludge by treatment with 0.1 M sulfuric acid at an acid-to-sludge ratio of 5 : 1, followed by electrodialysis preconcentration and electroreduction to recover nickel from the resulting solution at an electrode. The concentrations of Cu, Zn, and Fe impurity ions do not exceed the maximum permissible values and do not affect the kinetics or productivity of the nickel electrodeposition process. The current yield of nickel at the cathode reaches 96%. Additionally, the introduction of buffer substances enhanced the stability of nickel deposition at the cathode.
期刊介绍：
Journal of Water Chemistry and Technology focuses on water and wastewater treatment, water pollution monitoring, water purification, and similar topics. The journal publishes original scientific theoretical and experimental articles in the following sections: new developments in the science of water; theoretical principles of water treatment and technology; physical chemistry of water treatment processes; analytical water chemistry; analysis of natural and waste waters; water treatment technology and demineralization of water; biological methods of water treatment; and also solicited critical reviews summarizing the latest findings. The journal welcomes manuscripts from all countries in the English or Ukrainian language. All manuscripts are peer-reviewed.
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