SELECTIVE ELECTROEXTRACTION OF BASE METALS FROM LEACHING SOLUTIONS OBTAINED DURING THE RECYCLING OF WASTE PRINTED CIRCUIT BOARDS.  I. INTENSIVE GALVANOSTATIC ELECTRODEPOSITION OF COPPER

Marian-Iosif  FRÎNCU; Eniko  COVACI; Sorin-Aurel  DORNEANU; Petru  ILEA

doi:10.24193/subbchem.2020.3.03

SELECTIVE ELECTROEXTRACTION OF BASE METALS FROM LEACHING SOLUTIONS OBTAINED DURING THE RECYCLING OF WASTE PRINTED CIRCUIT BOARDS. I. INTENSIVE GALVANOSTATIC ELECTRODEPOSITION OF COPPER

Authors

Marian-Iosif FRÎNCU Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. Corresponding author: dorneanu@chem.ubbcluj.ro. https://orcid.org/0000-0001-9821-4995
Eniko COVACI Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. Corresponding author: dorneanu@chem.ubbcluj.ro. https://orcid.org/0000-0002-8453-9155
Sorin-Aurel DORNEANU Interdisciplinary Research Institute on Bio Nano Sciences, Babeş-Bolyai University, Cluj-Napoca, Romania. Email: dorneanu@chem.ubbcluj.ro. https://orcid.org/0000-0002-2690-6383
Petru ILEA Interdisciplinary Research Institute on Bio Nano Sciences, Babeş-Bolyai University, Cluj-Napoca, Romania. Email: dorneanu@chem.ubbcluj.ro. https://orcid.org/0000-0002-4334-2735

DOI:

https://doi.org/10.24193/subbchem.2020.3.03

Keywords:

waste printed circuit boards, selective electroextraction, copper recovery, electrochemical parallel paired processes

Abstract

This article presents our results concerning the feasibility of selective electroextraction of copper from leaching solutions obtained during base metals recycling from waste printed circuit boards. The researches were focused on the intensive copper electrodeposition as a potential parallel paired process for the electrochemical regeneration of the leaching solutions. Preliminary tests, performed by cyclic voltammetry on 316 stainless steel disc electrode in synthetic solutions of CuBr₂, SnBr₂ and PbBr₂, indicate the possibility of selective electroextraction of Cu if the electrodeposition potentials of Sn and Pb are not exceeded. Therefore, selective and intensive Cu electrodeposition tests were accomplished in galvanostatic mode, in a real sample of leaching solution, using also 316 stainless steel sheets cathodes. The experimental results demonstrate that the selective electrodeposition of Cu is possible in a wide range of current densities, between 200 and 600 A/m², if the concentration of Cu in solution of at least 12 g/L is maintained. Under these conditions, the purity of the obtained Cu deposits can attain 99.6%.

References

D. Zhang, Y. Cao, Y. Wang, G. Ding, Resour. Conserv. Recycl., 2020, 152, 1-7.

S. Akbari, A. Ahmad, Chem. Eng. Process., 2019, 142, 1-8.

Q. Tan, Q. Dong, L. Liu, Q. Song, Y. Liang, J. Li, J. Clean. Prod., 2017, 148, 509-517.

R. Wang, Z. Zhu, S. Tan, J. Guo, Z. Xu, J.Hazard. Mater., 2020, 385, 1-10.

H. Rau, A.R. Bisnar, J.P. Velasco, Sustainability, 2020, 12(10), 4037, 1-21.

Z. Wu, W. Yuan, J. Li, X. Wang, L. Liu, J. Wang, Front. Environ. Sci. Eng., 2017, 11, 8-21.

H. Wang, M. Han, S. Yang, Y. Chen, Q. Liu, S. Ke, Environ. Int., 2011, 37, 80-85.

R.Z. Rebello, M.T.W.D. Carneiro Lima, L.H. Yamane, R.R. Siman, Resour. Conserv. Recycl., 2020, 153, 1-7.

S. Ghosh, Thin Solid Films, 2019, 669, 641-658.

R.S. El-Nasr, S.M. Abdelbasir, A.H. Kamel, S.S.M. Hassan, Sep. Purif. Technol., 2020, 230, 1-11.

X.N. Zhu, C.C. Nie, H. Zhang, X.J. Lyu, J. Qiu, L. Li, J. Clean. Prod., 2020, 248:119235, 1-8.

R.A. Mesquita, R.A.F. Silva, D. Majuste, Process. Saf. Environ. Prot., 2018, 120, 107-117.

T. Moyo, B.H Chirume, J. Petersen, Resour. Conserv. Recycl., 2020, 152, 1-7.

L. Leyssens, B. Vinck, C.V. Straeten, F. Wuyts, L Maes, Toxicology, 2017, 387, 43-56.

J. Hao, Y. Wang, Y. Wu, F. Guo, Resour. Conserv. Recycl., 2020, 157, 104787, 1-15.

A. Tuncuk, V. Stazi, A. Akcil, E.Y. Yazici, H. Deveci, Miner. Eng., 2012, 25, 28–37.

H. Li, J. Eksteen, E. Oraby, Resour. Conserv. Recycl., 2018, 139, 122-139.

S. Fogarasi, F. Imre-Lucaci, A. Egedy, Á. Imre-Lucaci, P. Ilea, J. Waste Manag., 2015, 40, 136-143.

L.A. Diaz, T.E. Lister, J. Waste Manag., 2018, 74, 384-392.

C. Cocchiara, S.A. Dorneanu, R. Inguanta, C. Sunseri, P. Ilea, J. Clean. Prod., 2019, 230, 170-179.

S.A. Dorneanu, Studia UBB Chemia, 2017, LXII(3), 177-186.

S.A. Dorneanu, A.A. Avram, A.H. Marincaş, N. Cotolan, T. Frenţiu, P. Ilea, Studia UBB Chemia, 2018, LXIII(4), 147-158.

S.A. Dorneanu, E. Covaci, F. Imre-Lucaci, G. L. Turdean, Studia UBB Chemia, 2019, LXIV(2), Tom II, 555-565.

STUDIA UBB CHEMIA, Volume 65 (LXV), No. 3, September 2020

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Published

2020-09-30

How to Cite

FRÎNCU, M.-I. ., COVACI, E. ., DORNEANU, S.-A. ., & ILEA, P. . (2020). SELECTIVE ELECTROEXTRACTION OF BASE METALS FROM LEACHING SOLUTIONS OBTAINED DURING THE RECYCLING OF WASTE PRINTED CIRCUIT BOARDS. I. INTENSIVE GALVANOSTATIC ELECTRODEPOSITION OF COPPER. Studia Universitatis Babeș-Bolyai Chemia, 65(3), 33–44. https://doi.org/10.24193/subbchem.2020.3.03