DISSOLUTION OF BASE METALS FROM WPCBₛ USING Na₂S₂O₈ SOLUTION

Szabolcs FOGARASI; Florica IMRE-LUCACI; Petru ILEA; Paul-Șerban AGACHI; Árpád IMRE-LUCACI

Authors

Szabolcs FOGARASI Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. https://orcid.org/0000-0002-9917-6406 (unauthenticated)
Florica IMRE-LUCACI Interdisciplinary Research Institute on Bio Nano Sciences, “Babes-Bolyai” University, Cluj-Napoca, Romania. https://orcid.org/0000-0003-2943-7946 (unauthenticated)
Petru ILEA Interdisciplinary Research Institute on Bio Nano Sciences, Babeş-Bolyai University, Cluj-Napoca, Romania. https://orcid.org/0000-0002-4334-2735 (unauthenticated)
Paul-Șerban AGACHI Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania; Department of Chemical, Materials and Metallurgical Engineering, Faculty of Engineering and Technology, Botswana International University of Science and Technology, Palapye, Botswana. https://orcid.org/0000-0002-4298-1826 (unauthenticated)
Árpád IMRE-LUCACI Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. *Corresponding author: aimre@chem.ubbcluj.ro https://orcid.org/0000-0003-2943-7946 (unauthenticated)

Keywords:

base metals, persulfate, WPCBs, leaching, solid:liquid ratio

Abstract

The present work aimed to evaluate the performances of Cu, Zn and Ni dissolution from waste printed circuit boards (WPCBs) obtained from mobile phones (MP) using different solid:liquid ratios (SLR) and oxidant concentration (C_ox). It was found that the increase of C_ox at constant SLR increases more the performances of Zn and Ni dissolution than it does for Cu. In contrast, the increase of SLR from 1:5 to 1:15 at constant C_ox diminished the dissolution efficiency of Ni by 79% of Zn with 55 % and in the case Cu by 22 %. The experimental results revealed that the most favorable conditions for the dissolution of Zn, Ni and Cu are provided at the SLR of 1:5 and 0.42 M Na₂S₂O₈.

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DISSOLUTION OF BASE METALS FROM WPCBₛ USING Na₂S₂O₈ SOLUTION

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