Abstract
The massive application of electrical and electronic equipments increased the production and industry development, which leads to a rising environmental and economic problem: the increase of e-waste’s generation. The main cause to explain this problem is the combination between the diversification of electric and electronic device’s applications and programmed obsolescence, which promotes a high generation the so-called waste electrical and electronic equipments (WEEE ). Printed circuit boards (PCBs ) are present in almost all WEEE and their heterogenous composition have a considerable amount of metals, including some precious ones. It is necessary to think about viable alternatives for the destination of WEEE , mostly PCBs’ . Recycling is an environmental friendly purpose for PCBs’ destination, combined with economic advantage from the recovery of metals. The choice of correct process to recycling depends on the composition of the PCBs , so the correct characterization is required. This work aims to characterize two different PCBs from obsolete computers: motherboard and memory board, concluding that they have 35.5 and 18.92% of metals, respectively, including precious metals as silver and gold. Also, memory board has 0.122% of these precious metals to the detriment of 0.047% from motherboard.
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References
Ilyas S, Ruan C, Bhatti HN, Ghauri MA, Anwar MA (2010) Column bioleaching of metals from electronic scrap. Hydrometallurgy 101(3–4):135–140. https://doi.org/10.1016/j.hydromet.2009.12.007
Cayumil R, Khanna R, Rajarao R, Mukherjee OS, Sahajwalla V (2016) Concentration of precious metals during their recovery from electronic waste. Waste Manag 57:121–130. https://doi.org/10.1016/j.wasman.2015.12.004
Oh CJ, Lee SO, Yang HS, Ha TJ, Kim MJ (2003) Selective leaching of valuable metals from waste printed circuit boards. J Air Waste Manag Assoc 53(7):897–902. https://doi.org/10.1080/10473289.2003.10466230
Havlik T, Orac D, Petranikova M, Miskufova A (2011) Hydrometallurgical treatment of used printed circuit boards after thermal treatment. Waste Manag 31(7):1542–1546. https://doi.org/10.1016/j.wasman.2011.02.012
European Parliament and of the Council (2003) Directive 2002/96/EC of the European Parliament and of the Council on waste electrical and electronic equipment (WEEE). In: Official Journal of the European Union. http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A32012L0019. Accessed 14 Aug 2017
European Parliament and of the Council (2003) Directive 2002/95/EC of the European Parliament and of the Council on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS). In: Official Journal of the European Union. http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32002L0095. Accessed 14 Aug 2017
Kumari A, Jha MK, Lee JC, Singh RP (2016) Clean process for recovery of metals and recycling of acid from the leach liquor PCBs. J Clean Prod 112:4826–4834. https://doi.org/10.1016/j.jclepro.2015.08.018
Robinson BH (2009) E- waste: An assessment of global production and environmental impacts. Sci Total Environ 408(2):183–191. https://doi.org/10.1016/j.scitotenv.2009.09.044
Cui J, Zhang L (2008) Metallurgical recovery of metals from electronic waste: a review. J Hazard Mater 158(2–3):228–256. https://doi.org/10.1016/j.jhazmat.2008.02.001
Tuncuk A, Stazi V, Akcil A, Yazici EY, Deveci H (2012) Aqueous metal recovery techniques from e-scrap: hydrometallurgy in recycling. Miner Eng 25(1):28–37. https://doi.org/10.1016/j.mineng.2011.09.019
Jing-ying L, Xiu-li X, Wen-quan L (2012) Thiourea leaching gold and silver from the printed circuit boards of waste mobile phones. Waste Manag 32(6):1209–1212. https://doi.org/10.1016/j.wasman.2012.01.026
Acknowledgements
The authors gratefully acknowledge the financial support given by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) through master grant (131479/2017-2).
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de Carvalho, M.A., Caldas, M.P.K., Tenório, J.A.S., Espinosa, D.C.R. (2018). Characterization of PCBs from Obsolete Computers Aiming the Recovery of Precious Metals. In: Li, B., et al. Characterization of Minerals, Metals, and Materials 2018 . TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72484-3_16
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DOI: https://doi.org/10.1007/978-3-319-72484-3_16
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