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Sorption and desorption of bisphenols on commercial plastics and the effect of UV aging
Chen, Xiaoxin1; Chen, Chang Er2; Guo, Xiaoyuan3; Sweetman, Andrew J.1
2023-01
Source PublicationChemosphere
ISSN0045-6535
Volume310
Abstract

Plastics gradually degrade in the natural environment from the effect of irradiation, which can change the surface properties of plastics and affect the migration behaviour of pollutants. Up to now, studies on the sorption/desorption behaviour of organic pollutants on aged plastics are still limited. In this study, several types of commercial plastics (polyurethane (PU), polyamide (PA), polyvinyl chloride (PVC), expanded polystyrene (EPS)) were selected to investigate the sorption and release behaviour for four kinds of bisphenols (bisphenol-F, A, B, AP). The results from Raman spectroscopy and scanning electron microscopy (SEM) analysis showed evidence of oxidization and surface cracks of plastics after irradiation. The sorption behaviour for both fresh and aged plastics were dominated by hydrophobicity. In addition, the electrostatic force, H-bonding interaction, and π-π interaction were also the important factors impacting the sorption process. The desorption kinetics behaviour indicates that desorption becomes faster after aging. Hydrophobicity is also an important factor that affects desorption behaviour. This study showed that sorption capacity for most fresh and aged plastics was enhanced by the impact of salinity and dissolved organic matter (DOM). Increased temperature could increase the desorption of bisphenols on both fresh and aged plastics, which illustrated that warm environments would promote more pollutants be released from plastics to water bodies.

KeywordAdsorption Aging Mechanism Bisphenols Desorption Plastics
DOI10.1016/j.chemosphere.2022.136867
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000913389300001
PublisherElsevier Ltd
Scopus ID2-s2.0-85140054391
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
2.Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety and MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
3.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, China
Recommended Citation
GB/T 7714
Chen, Xiaoxin,Chen, Chang Er,Guo, Xiaoyuan,et al. Sorption and desorption of bisphenols on commercial plastics and the effect of UV aging[J]. Chemosphere, 2023, 310.
APA Chen, Xiaoxin., Chen, Chang Er., Guo, Xiaoyuan., & Sweetman, Andrew J. (2023). Sorption and desorption of bisphenols on commercial plastics and the effect of UV aging. Chemosphere, 310.
MLA Chen, Xiaoxin,et al."Sorption and desorption of bisphenols on commercial plastics and the effect of UV aging".Chemosphere 310(2023).
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