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Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption.

Authors :
Javaid, Saad
Zanoletti, Alessandra
Serpe, Angela
Bontempi, Elza
Alessandri, Ivano
Vassalini, Irene
Source :
Molecules; Jan2024, Vol. 29 Issue 2, p400, 12p
Publication Year :
2024

Abstract

Electronic waste (e-waste) is one of the fastest-growing waste streams in the world and Europe is classified as the first producer in terms of per capita amount. To reduce the environmental impact of e-waste, it is important to recycle it. This work shows the possibility of reusing glassy substrates, derived from the MW-assisted acidic leaching of Waste Printed Circuit Boards (WPCBs), as an adsorbent material. The results revealed an excellent adsorption capability against methylene blue (MB; aqueous solutions in the concentration range 10<superscript>−5</superscript> M–2 × 10<superscript>−5</superscript> M, at pH = 7.5). Comparisons were performed with reference samples such as activated carbons (ACs), the adsorbent mostly used at the industrial level; untreated PCB samples; and ground glass slides. The obtained results show that MW-treated WPCB powder outperformed both ground glass and ground untreated PCBs in MB adsorption, almost matching AC adsorption. The use of this new adsorbent obtained through the valorization of e-waste offers advantages not only in terms of cost but also in terms of environmental sustainability. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14203049
Volume :
29
Issue :
2
Database :
Complementary Index
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
175079667
Full Text :
https://doi.org/10.3390/molecules29020400