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Magnetic Chitosan for the Removal of Sulfamethoxazole from Tertiary Wastewaters.

Authors :
Pirozzi, Domenico
Latte, Alessandro
Yousuf, Abu
De Mastro, Francesco
Brunetti, Gennaro
EL Hassanin, Andrea
Sannino, Filomena
Source :
Nanomaterials (2079-4991). Mar2024, Vol. 14 Issue 5, p406. 15p.
Publication Year :
2024

Abstract

Magnetic chitosan nanoparticles, synthesized by in situ precipitation, have been used as adsorbents to remove sulfamethoxazole (SMX), a sulfonamide antibiotic dangerous due to its capacity to enter ecosystems. The adsorption of SMX has been carried out in the presence of tertiary wastewaters from a depuration plant to obtain more realistic results. The effect of pH on the adsorption capacity significantly changed when carrying out the experiments in the presence of wastewater. This change has been explained while taking into account the charge properties of both the antibiotic and the magnetic chitosan. The composition of wastewaters has been characterized and discussed as regards its effect on the adsorption capacity of the magnetic chitosan. The models of Elovich and Freundlich have been selected to describe the adsorption kinetics and the adsorption isotherms, respectively. The analysis of these models has suggested that the adsorption mechanism is based on strong chemical interactions between the SMX and the magnetic chitosan, leading to the formation of an SMX multilayer. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20794991
Volume :
14
Issue :
5
Database :
Academic Search Index
Journal :
Nanomaterials (2079-4991)
Publication Type :
Academic Journal
Accession number :
175991921
Full Text :
https://doi.org/10.3390/nano14050406