Article Dans Une Revue Journal of Environmental Chemical Engineering Année : 2023

The influence of cross-linking density on the efficiency of post-synthetic sulfonation of hyper-cross-linked polymers and their adsorption capacity for antibiotic pollutants

Résumé

Hyper-cross-linked polymers (HCPs) attract increasing attention as promising adsorbents for removal of organic pollutants from water. The present work reveals for the first time that the efficiency of the post-synthetic sulfonation of HCPs-based adsorbents and their reactivity in removal of selected polar antibiotic pollutants can be simply controlled by adjusting the crosslinking density of the polymer network. The study included both the evaluation of the mechanism and kinetics of the adsorption process over sulfonated HCPs, as well as the determination of their stability, recyclability, and affinity toward various antibiotics. The latter was established based on adsorption tests using mono-and multicomponent mixtures of different structure antibiotics (ciprofloxacin, tetracycline, sulfamethoxazole and amoxicillin). The adsorption capacity of all sulfonated polymers was found to be directly proportional to the concentration of −SO 3 H functions and inversely proportional to the cross-linking density of the parent HCPs. The most promising sulfonated polymer had approximately 4 times higher adsorption capacity toward ciprofloxacin than commercial carbon-based adsorbent Norit (427.5 vs. 110.5 mg/g, respectively). The main adsorption mechanism over sulfonated HCPs was chemisorption of the antibiotics via ionic interactions with surface-SO 3 H groups. Spent adsorbent could be successfully recycled ten times without any loss in its efficiency.

Fichier principal
Vignette du fichier
Manuscript_15.05.2023.pdf (1.58 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04254552 , version 1 (23-10-2023)

Licence

Identifiants

Citer

Joanna Wolska, Malwina Muńko, Hussein El Siblani, Igor Telegeiev, Marcin Frankowski, et al.. The influence of cross-linking density on the efficiency of post-synthetic sulfonation of hyper-cross-linked polymers and their adsorption capacity for antibiotic pollutants. Journal of Environmental Chemical Engineering, 2023, 11 (5), pp.110429. ⟨10.1016/j.jece.2023.110429⟩. ⟨hal-04254552⟩
118 Consultations
453 Téléchargements

Altmetric

Partager

  • More