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Published in: Journal of Material Cycles and Waste Management 2/2023

11-01-2023 | ORIGINAL ARTICLE

Ag recovery from waste printed circuit boards of cell phone for synthesis of Ag nanoparticles and their antibacterial activity

Authors: Yara Marinato, Giovani Pavoski, Carlos Gonzalo Alvarez Rosario, Lidiane Maria de Andrade, Denise Crocce Romano Espinosa

Published in: Journal of Material Cycles and Waste Management | Issue 2/2023

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Abstract

The increase in technology has increased the consumption and waste of electrical and electronic equipment, especially cell phones (smartphones). The waste printed circuit board (WPCBs) contained in this waste include metals that can be recovered, adding value to this waste and minimizing environmental impacts with its incorrect disposal or treatment. The present work applies the concepts of circular economy, the silver was recovered from WPCBs obsolete cell phones (smartphones) through hydrometallurgical processing in two stages of leaching. After the leaching process, the silver was recovered as AgCl, using a selective precipitation process. For the synthesis of AgNPs, the green synthesis was used at a temperature of 60 °C, using glucose as a reducing agent and the variation of two stabilizers: sodium citrate and polyvinylpyrrolidone (PVP). Synthesis of AgNPs using sodium citrate as a stabilizing agent, resulting in AgNPs with two diameter ranges of 47 and 2 nm. In the synthesis of AgNPs using PVP as a stabilizing agent, formed two diameters of 65 and 5 nm. The properties indicated polydispersed AgNPs predominantly spherical in shape. Antibacterial activity of AgNPs was evaluated on Escherichia coli bacteria growth, the results suggest that AgNPs are strong inhibitory agents for Gram-negative bacteria.

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Literature
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go back to reference Žiukaite S, Ivanauskas R, Tatariants M, Denafas G (2017) Feasibilities for hydrometallurgical recovery of precious metals from waste printed circuit boards in Lithuania. Chemija 28:109–116 Žiukaite S, Ivanauskas R, Tatariants M, Denafas G (2017) Feasibilities for hydrometallurgical recovery of precious metals from waste printed circuit boards in Lithuania. Chemija 28:109–116
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go back to reference de Andrade LM, Rosario CGA, de Carvalho MA et al (2019) Copper Recovery from Printed Circuit Boards from Smartphones Through Bioleaching BT—TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. Springer International Publishing, Cham, pp 837–844CrossRef de Andrade LM, Rosario CGA, de Carvalho MA et al (2019) Copper Recovery from Printed Circuit Boards from Smartphones Through Bioleaching BT—TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. Springer International Publishing, Cham, pp 837–844CrossRef
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Metadata
Title
Ag recovery from waste printed circuit boards of cell phone for synthesis of Ag nanoparticles and their antibacterial activity
Authors
Yara Marinato
Giovani Pavoski
Carlos Gonzalo Alvarez Rosario
Lidiane Maria de Andrade
Denise Crocce Romano Espinosa
Publication date
11-01-2023
Publisher
Springer Japan
Published in
Journal of Material Cycles and Waste Management / Issue 2/2023
Print ISSN: 1438-4957
Electronic ISSN: 1611-8227
DOI
https://doi.org/10.1007/s10163-022-01579-3

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