Author:
Abou Alsoaud Mohamed M.,Taher Mahmoud A.,Hamed Abdelrahman M.,Elnouby Mohamed S.,Omer Ahmed M.
Abstract
AbstractIn this investigation, Kaolin (K) impregnated aminated chitosan (AM-CTS) composite beads were fabricated with multi-features including low-cost, high performance, renewable and ease of separation for adsorption of anionic Congo red (CR) dye. Characterization tools such as FTIR, XRD, SEM, TGA, BET, XPS and Zeta potential were thoroughly employed to confirm the successful formulation process. The results revealed that K@ AM-CTS composite beads displayed higher specific surface area (128.52 m2/g), while the thermal stability was prominently improved compared to pure AM-CTS. In addition, the adsorption equilibrium of CR dye was accomplished rapidly and closely gotten within 45 min. The removal efficiency was significantly enriched and reached 90.7% with increasing kaolin content up to 0.75%, compared to 20.3 and 58% for pristine kaolin and AM-CTS, respectively. Moreover, the adsorption process obeyed the pseudo-first order kinetic model, while data were agreed with the Freundlich isotherm model with a maximum adsorption capacity reached 104 mg/g at pH 6. Furthermore, D–R isotherm model demonstrated the physical adsorption process of CR dye, which includes the electrostatic interactions, ion exchange and H-bonding. Thermodynamics evidenced the spontaneous and endothermic nature of the adsorption process. Interestingly, the developed K@AM-CTS composites beads showed better reusability for eight consecutive cycles, suggesting their feasible applicability for adsorptive removal anionic dyes from polluted aquatic bodies.
Funder
The Science, Technology & Innovation Funding Authority
Publisher
Springer Science and Business Media LLC
Reference74 articles.
1. Simonescu, C. M. et al. Comparative study of CoFe2O4 nanoparticles and CoFe2O4-Chitosan composite for Congo red and methyl orange removal by adsorption claudia. Nanomaterials 11, 711–735 (2021).
2. Tamer, T. M. et al. Formation of Zinc oxide nanoparticles using alginate as a template for purification of waste water. Environ. Nanotechnol. Monit. Manag. 10, 112–121 (2018).
3. Vimonses, V. et al. Adsorption of congo red by three Australian kaolins. Appl. Clay Sci. 43, 465–472 (2009).
4. Zhang, W. et al. A novel chitosan–vanadium-titanium-magnetite composite as a superior adsorbent for organic dyes in wastewater. Environ. Int. 142, 105798 (2020).
5. Liu, J., Wang, N., Zhang, H. & Baeyens, J. Adsorption of Congo red dye on FexCo3-xO4 nanoparticles. J. Environ. Manag. 238, 473–483 (2019).
Cited by
14 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献