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Adsorption study on the removal of ciprofloxacin in aqueous solution by an acidic ion exchange resin with bifunctional group

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Title Adsorption study on the removal of ciprofloxacin in aqueous solution by an acidic ion exchange resin with bifunctional group
 
Creator Jia, Bingqian
Zheng, Changlian
Chen, Bin
Li, Rong
 
Subject Acidic ion exchange resin
Bifunctional group
Ciprofloxacin
Kinetics
Thermodynamics
 
Description 23-34
Removal of fluoroquinolone antibiotic pollutants in the aquatic environment has become a research hotspot. In this work,
two skeletal resins and four acidic ion exchange resins have been used as adsorbent materials to evaluate their adsorption
properties for fluoroquinolone antibiotic ciprofloxacin (CIP) in aqueous solution. Compared with other materials, the
sulfonic-phosphoric acid-based bifunctional resin S9570 has shown the best adsorption performance for CIP. The effect of
solution pH on the adsorption of CIP by S9570 has been further explored, and the optimal adsorption capacity has been
obtained at pH 4.0. The adsorption kinetics and thermodynamics of S9570 for CIP have been investigated in details. The
high fits of the pseudo-second-order and intraparticle diffusion equations indicate that these two models can better describe
the adsorption process of S9570 for CIP which has been jointly controlled by chemical adsorption and intraparticle diffusion
steps and has been accompanied by weak or intermediate initial adsorption behaviour. The best fit results of Langmuir has
indicated that there exists a monolayer adsorption on the surface of the S9570.Thermodynamic parameters suggest that the
adsorption is an endothermic, spontaneous process with increased randomness at the solid-liquid interface. Through this
evaluation of resin adsorption materials, it has been proved that the adsorbent material has good reusability and antiinterference
performance.
 
Date 2023-01-27T07:09:17Z
2023-01-27T07:09:17Z
2023-01
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/61301
https://doi.org/10.56042/ijct.v30i1.68824
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.30(1) [January 2023]