Crosslinked chitosan–montmorillonite composite and its magnetized counterpart for the removal of basic fuchsin from wastewater: Parametric optimization using Box-Behnken design
Author | Ahmed S., El-Shafie |
Author | El-Azazy, Marwa |
Available date | 2024-03-06T07:29:46Z |
Publication Date | 2024-02-20 |
Publication Name | International Journal of Biological Macromolecules |
Identifier | http://dx.doi.org/10.1016/j.ijbiomac.2024.130224 |
Citation | El-Shafie, A. S., & El-Azazy, M. (2024). Crosslinked chitosan–montmorillonite composite and its magnetized counterpart for the removal of basic fuchsin from wastewater: Parametric optimization using box-behnken design. International Journal of Biological Macromolecules, 130224. |
ISSN | 0141-8130 |
Abstract | Treating wastewater polluted with organic dyestuffs is still a challenge. In that vein, facile synthesis of a structurally simple composite of chitosan with montmorillonite (CS-MMT) using glutaraldehyde as a crosslinker and the magnetized analogue (MAG@CS-MMT) was proposed as versatile adsorbents for the cationic dye, basic Fuchsin (FUS). Statistical modeling of the adsorption process was mediated using Box-Behnken (BB) design and by varying the composite dose, pH, [FUS], and contact time. Characterization of both composites showed an enhancement of surface features upon magnetization, substantiating a better FUS removal of the MAG@CS-MMT (%R = 98.43 %) compared to CS-MMT (%R = 68.02 %). The surface area analysis demonstrates that MAG@CS-MMT possesses a higher surface area, measuring 41.54 m2/g, and the surface analysis of the magnetized nanocomposite, conducted using FT-IR and Raman spectroscopies, proved the presence of FeO peaks. In the same context, adsorption of FUS onto MAG@CS-MMT fitted-well to the Langmuir isotherm model and the maximum adsorption capacities (qm) were 53.11 mg/g for CS-MMT and 88.34 mg/g for MAG@CS-MMT. Kinetics investigation shows that experimental data fitted well to the pseudo-second order (PSO) model. Regeneration study reveals that MAG@CS-MMT can be recovered effectively for repeated use with a high adsorption efficiency for FUS. |
Sponsor | Open Access funding provided by the Qatar National Library. |
Language | en |
Publisher | Elsevier |
Subject | Crosslinking Polymer-clay composite Adsorption |
Type | Article |
Volume Number | 263 |
Open Access user License | http://creativecommons.org/licenses/by/4.0/ |
ESSN | 1879-0003 |
Check access options
Files in this item
This item appears in the following Collection(s)
-
Chemistry & Earth Sciences [556 items ]