A1 Journal article (refereed)
Effective Recovery Process of Copper from Waste Printed Circuit Boards Utilizing Recycling of Leachate (2021)


Rajahalme, J., Perämäki, S., Budhathoki, R., & Väisänen, A. (2021). Effective Recovery Process of Copper from Waste Printed Circuit Boards Utilizing Recycling of Leachate. JOM, 73(4), 980-987. https://doi.org/10.1007/s11837-020-04510-z


JYU authors or editors


Publication details

All authors or editorsRajahalme, Joona; Perämäki, Siiri; Budhathoki, Roshan; Väisänen, Ari

Journal or seriesJOM

ISSN1047-4838

eISSN1543-1851

Publication year2021

Publication date21/12/2020

Volume73

Issue number4

Pages range980-987

PublisherSpringer

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1007/s11837-020-04510-z

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/73508


Abstract

This study presents an optimized leaching and electrowinning process for the recovery of copper from waste printed circuit boards including studies of chemical consumption and recirculation of leachate. Optimization of leaching was performed using response surface methodology in diluted sulfuric acid and hydrogen peroxide media. Optimum leaching conditions for copper were found by using 3.6 mol L−1 sulfuric acid, 6 vol.% hydrogen peroxide, pulp density of 75 g L−1 with 186 min leaching time at 20°C resulting in complete leaching of copper followed by over 92% recovery and purity of 99.9% in the electrowinning. Study of chemical consumption showed total decomposition of hydrogen peroxide during leaching, while changes in sulfuric acid concentration were minor. During recirculation of the leachate with up to 5 cycles, copper recovery and product purity remained at high levels while acid consumption was reduced by 60%.


Keywordscopperrecovery (recapture)waste electronic and electrical equipmentcircuit boardsdissolution (active)sulphuric acidhydrogen peroxide


Contributing organizations


Ministry reportingYes

Reporting Year2021

JUFO rating1


Last updated on 2024-03-04 at 20:26