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Linear solvation energy relationships for adsorption of aromatic organic compounds by microplastics
Date
2023-12-05
Author
Hatinoglu, Dilara
Adan, Abdulrahman
Perreault, Francois
İmamoğlu, İpek
Apul, Onur G.
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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This study develops predictive models for adsorption of organic compounds (OC) by microplastics using linear solvation energy relationship (LSER). The adsorption mechanism of aromatic OCs by microplastics was investigated by delineating the effect of molecular weight of the OCs, polymer type of MPs, and background water chemistry. The benchmark model for adsorption of OCs (n = 28) by polyethylene yielded an R2 = 0.85 (n = 28), RMSE = 0.38, Q2LOO = 0.73. Further narrowing the dataset down by decreasing the molecular weight cutoff to OCs < 192 g/mol improved the model to R2 = 0.98 (n = 13). Validation techniques tested the predictive strength of the benchmark model, which included new experimental adsorption data and performing leave-one-out cross validation. Among LSER model descriptors, the molecular volume was the most predominant descriptor in all scenarios, suggesting the importance of non-specific interactions and OC hydrophobicity. The results demonstrated that LSER is a promising approach for predicting the adsorption of aromatic OCs by MPs.
Subject Keywords
Adsorption
,
LFER
,
LSER
,
Microplastics
,
Modelling
URI
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85171464854&origin=inward
https://hdl.handle.net/11511/105879
Journal
Chemical Engineering Science
DOI
https://doi.org/10.1016/j.ces.2023.119233
Collections
Department of Environmental Engineering, Article
Citation Formats
IEEE
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BibTeX
D. Hatinoglu, A. Adan, F. Perreault, İ. İmamoğlu, and O. G. Apul, “Linear solvation energy relationships for adsorption of aromatic organic compounds by microplastics,”
Chemical Engineering Science
, vol. 282, pp. 0–0, 2023, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85171464854&origin=inward.