Khoo, Y.T. and Tay, K.S. and Low, Kah Hin (2024) Adsorptive removal of sulphonamides in water by graphene oxide-doped porous polycarbonate derived from optical disc waste. International Journal of Environmental Science and Technology, 21 (1). 541 – 554. ISSN 1735-1472, DOI https://doi.org/10.1007/s13762-023-05007-3.
Full text not available from this repository.Abstract
Upcycling e-waste polycarbonate into a potential adsorbent material to remove sulphonamide residuals in the aquatic system could simultaneously facilitate the management of e-waste plastics and the remediation of wastewater. Hence, this work presents the application of a porous graphene oxide/polycarbonate solid phase prepared through thermally impacted non-solvent-induced phase separation for the adsorptive removal of sulphacetamide, sulphadiazine, sulphamethazine, sulphamethoxazole, and sulphathiazole in the aqueous phase. The polycarbonate recovered from optical disc waste was doped with a small amount of graphene oxide to produce a nest-like structure with enhanced surface area, improved thermal stability, and adsorptive ability towards sulphonamides. The effects of experimental factors on the adsorption capacity towards sulphonamides were also examined; the response surface model suggested optimum conditions of around pH 7, initial sulphonamide concentration of 15 ppm, adsorbent dosage of 0.08 g, and contact time of 4.3 h. Regardless of the type of sulphonamide, the empirical data best fitted the pseudo-second-order adsorption kinetic model and followed Langmuir isotherms, revealing that the favourable chemisorption process consisted entirely of a monolayer mechanism at the adsorbent surface. The product exhibited comparable adsorptive performance in different water matrices, with recoverability and reusability of up to 4 cycles. Overall, the waste-derived adsorbent poses great potential for application in wastewater treatment. © 2023, The Author(s) under exclusive licence to Iranian Society of Environmentalists (IRSEN) and Science and Research Branch, Islamic Azad University.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya [Grant no. FP074-2018A] |
| Uncontrolled Keywords: | Adsorption; E-waste; Graphene oxide; Polycarbonate; Sulphonamide antibiotics; Wastewater treatment |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 25 Mar 2024 08:01 |
| Last Modified: | 25 Mar 2024 08:01 |
| URI: | http://eprints.um.edu.my/id/eprint/45026 |
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