Hydrometallurgical recycling process for mobile phone printed circuit boards using ozone
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F21%3A10247458" target="_blank" >RIV/61989100:27740/21:10247458 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27230/21:10247458 RIV/61989100:27360/21:10247458 RIV/61989100:27640/21:10247458
Result on the web
<a href="https://www.mdpi.com/2075-4701/11/5/820/htm" target="_blank" >https://www.mdpi.com/2075-4701/11/5/820/htm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/met11050820" target="_blank" >10.3390/met11050820</a>
Alternative languages
Result language
angličtina
Original language name
Hydrometallurgical recycling process for mobile phone printed circuit boards using ozone
Original language description
Printed circuit boards (PCBs) can be an important source of non-ferrous metals (Al, Sn, Zn, and Ni) and precious metals (Au, Ag, Cu, and Pd). With the continuous increase in demand for metals due to the depletion of ores, recycling of this waste is becoming an attractive alternative. The printed circuits also contain hazardous metals, such as Pb, Hg, As, and Cd. Due to the huge increase in the amount of e-waste, the processing of printed circuit boards for metal recovery and proper handling of hazardous substances has a positive effect on the environment. Pyrometallurgical and hydrometallurgical methods are used for the treatment of this waste. Various oxidizing agents are used in the hydrometallurgical processes, including ozone. PCBs from mobile phones were assessed for the recovery of Cu, Sn, and precious metals. The ground and sieved materials were leached in nitric acid, hydrochloric acid, and sulfuric acid at various process parameters, such as leaching time, leaching agent, and temperature. It was found that the best result was obtained using hydrochloric acid with the addition of ozone at 353 K for a period of 4 h to obtain 68.45 g/dm3 of copper. Preliminary results of electrolysis and cementation are also presented. (C) 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Metals
ISSN
2075-4701
e-ISSN
2075-4701
Volume of the periodical
11
Issue of the periodical within the volume
5
Country of publishing house
CH - SWITZERLAND
Number of pages
10
Pages from-to
820
UT code for WoS article
000662584600001
EID of the result in the Scopus database
2-s2.0-85105880338