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Title: HYDROMETALLURGICAL METHODS OF GALVANIC SLUDGE RECYCLING
HYDROMETALLURGICAL METHODS OF GALVANIC SLUDGE RECYCLING

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Hana Rigoulet; Silvie Brozova; Jaromir Drapala; Ales Sliva
10.5593/sgem2022/4.1/s18.25
10.5593/sgem2022/4.1
1314-2704
978-619-7603-44-6
English
22
4.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Recycling
The paper deals with the possibility of obtaining zinc and iron from waste galvanic sludge, which arises during galvanic plating. Galvanic sludges, which contain more significant amounts of heavy metals, form wastes that are suitable for recycling. These arise during the treatment of wastewater from the operation of the electroplating plant. It is a mixture of metal hydroxides, mainly iron, zinc, chromium, and others. The sludge is sedimented in the reaction wells and, after sedimentation, is pumped into the sludge sump. From there, they are drained in a sludge press by a sludge pump. Subsequently, dewatered sludge is formed, which is accumulated in containers. Hydrometallurgical methods are used for sludge treatment. The aim of the experimental part was to obtain zinc and iron after leaching of galvanic sludges. Leaching was performed in sulfuric acids at different temperatures and time intervals. The main part of the experimental work was to determine the most suitable conditions for achieving the maximum yield of zinc and iron. The practical part describes laboratory experiments of the hydrometallurgical process of leaching in acids, with the addition of oxidizing agents. Subsequent chemical analyzes of leachate and leachate. Finally, other procedures for possible recovery of metals as secondary raw materials are indicated.
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This work was solved in the frame of the project SP2022/65, SP2022/68, SP2022/15 and the project of Technological Agency of Czech Republic No. SS01020312 „Innovative technology of the closed loop water circulation in the electro-galvanizing process and processing of metal waste – sludges and filtration cakes from the galvanizing plant“.
conference
https://doi.org/10.5593/sgem2022/4.1/s18.25
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
193-200
04 - 10 July, 2022
website
8595
metals, galvanic sludge, hydrometallurgical processes, leaching