Innovative Hydrometallurgy for Galvanic Sludge Sustainable Recovery
Author:
Brožová Silvie1ORCID, Drápala Jaromír1ORCID, Brož Jiří2ORCID, Macháčková Adéla1ORCID
Affiliation:
1. 1 VŠB-Technical University of Ostrava , Czech Republic 2. 2 LANEX a.s., Hlučínská 96 , Bolatice , Czech Republic
Abstract
Abstract
The manuscript explores the feasibility of recovering zinc and iron from waste galvanic sludge generated during galvanic plating processes. Galvanic sludge, characterized by elevated concentrations of heavy metals, represents a suitable candidate for hydrometallurgical recycling. The primary objective of the experimental and practical phases was to extract zinc and iron through the leaching of galvanic sludge. Leaching procedures were conducted using sulfuric acid at varying temperatures and time durations, augmented by the introduction of oxidizing agents such as hydrogen peroxide or ozone. Subsequent separation of the leach and filtrate was achieved through filtration. The leachate underwent additional processing involving the precipitation of iron and other metals, employing diverse agents. Following further filtration, electrolysis was employed to attain pure zinc on the cathode, utilizing an electrical voltage of approximately 3 V. Comprehensive chemical analyses were conducted on all intermediate products, including the leachate, leach liquor, filtrate, solid precipitate, and the separated metal on the cathode. The outcomes of these analyses are meticulously presented in tables and graphs.
Publisher
Walter de Gruyter GmbH
Subject
Industrial and Manufacturing Engineering,Metals and Alloys,Strategy and Management,Mechanical Engineering
Reference34 articles.
1. Agacayak, T., Aras, A., Aydogan, S., Erdemoglu, M., 2014. Leaching of chlacopyrite concentrate in hydrogen peroxide solution, Physicochemical Problems in Mineral Processing, 50, 657-666, DOI: 10.5277/ppmp140219. 2. Borkowski, S., Ulewicz, R., Selejdak, J., Konstanciak, M., Klimecka-Tatar, D. 2012. The use of 3x3 matrix to evaluation of ribbed wire manufacturing technology, METAL 2012 - Conference Proceedings, 21st International Conference on Metallurgy and Materials, 1722–1728 3. AHN, J., WU, J., LEE, J., (2019). Investigation on chalcopyrite leaching with methanesulfonic acid (MSA) and hydrogen peroxide. Hydrometallurgy, 187, 54-62, DOI: 10.1016/j.hydromet.2019. 05.001. 4. Barakat, M., Mahmoud, M.H.H., Shehata, M.M., 2007. Hydrometallurgical recovery of zinc from fine blend of galvanization processes, Separation Science and Technology 41, 1757-1772, DOI: 10.1080/01496390600588747. 5. Brožová, S., Lisinska, M., Saternus, M., Gajda, B., Martynková, G.S., Slíva, A., 2021. Hydrometallurgical recycling process for mobile phone, printed circuit boards using ozone, Metals, 11(5), 820, DOI: 10.3390/met11 050820.
|
|