Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/29/2/400 |
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| author | Saad Javaid Alessandra Zanoletti Angela Serpe Elza Bontempi Ivano Alessandri Irene Vassalini |
| author_facet | Saad Javaid Alessandra Zanoletti Angela Serpe Elza Bontempi Ivano Alessandri Irene Vassalini |
| author_sort | Saad Javaid |
| collection | DOAJ |
| description | 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<sup>−5</sup> M–2 × 10<sup>−5</sup> 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. |
| first_indexed | 2024-03-08T09:49:48Z |
| format | Article |
| id | doaj.art-86391f31b60d4addbf3d26e2dad3abe5 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-08T09:49:48Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-86391f31b60d4addbf3d26e2dad3abe52024-01-29T14:08:15ZengMDPI AGMolecules1420-30492024-01-0129240010.3390/molecules29020400Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue AdsorptionSaad Javaid0Alessandra Zanoletti1Angela Serpe2Elza Bontempi3Ivano Alessandri4Irene Vassalini5Sustainable Chemistry and Materials Laboratory, Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, ItalyChemistry for Technologies Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, 25123 Brescia, ItalyDepartment of Civil and Environmental Engineering and Architecture (DICAAR), INSTM Unit, Via Marengo 2, 09123 Cagliari, ItalyChemistry for Technologies Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, 25123 Brescia, ItalySustainable Chemistry and Materials Laboratory, Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, ItalySustainable Chemistry and Materials Laboratory, Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, ItalyElectronic 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<sup>−5</sup> M–2 × 10<sup>−5</sup> 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.https://www.mdpi.com/1420-3049/29/2/400methylene blueadsorptione-wasterecyclingprinted circuit boardsglass fibers |
| spellingShingle | Saad Javaid Alessandra Zanoletti Angela Serpe Elza Bontempi Ivano Alessandri Irene Vassalini Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption Molecules methylene blue adsorption e-waste recycling printed circuit boards glass fibers |
| title | Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption |
| title_full | Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption |
| title_fullStr | Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption |
| title_full_unstemmed | Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption |
| title_short | Glassy Powder Derived from Waste Printed Circuit Boards for Methylene Blue Adsorption |
| title_sort | glassy powder derived from waste printed circuit boards for methylene blue adsorption |
| topic | methylene blue adsorption e-waste recycling printed circuit boards glass fibers |
| url | https://www.mdpi.com/1420-3049/29/2/400 |
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