Biocomposite of sodium-alginate with acidified clay for wastewater treatment: kinetic, equilibrium and thermodynamic studies

Kausar, A, Sher, F ORCID: https://orcid.org/0000-0003-2890-5912, Hazafa, A, Javed, A, Sillanpää, M and Iqbal, M, 2020. Biocomposite of sodium-alginate with acidified clay for wastewater treatment: kinetic, equilibrium and thermodynamic studies. International Journal of Biological Macromolecules, 161, pp. 1272-1285. ISSN 0141-8130

Preview

Text 1567979_Sher.pdf - Post-print Download (1MB) | Preview

Abstract

Clay-based composites were prepared, characterized, and applied for the elimination of Blue FBN (BFBN) and Rose FRN (RFRN) dyes. The Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), Thermogravimetric (TGA) and X-ray diffraction analyses were performed to check the interaction of dye molecule with adsorbents. The analysis showed a successful interaction between adsorbent and dyes ions. The experimental data was best fitted with Freundlich isotherm for both dyes (BFBN and RFRN). The findings revealed that at 80 min the adsorption grasped equilibrium in the case of both dyes and succeeded the pseudo-second-order kinetics model. Furthermore, the enthalpy (ΔH°), Gibbs free energy (ΔG°) and entropy (ΔS°) changes suggested that adsorption was exothermic, physical and spontaneous in nature. The maximum adsorption capacities were determined as 76.39% for BFBN and 59.85% for RFRN dye at pH 2.0 and 30 °C. Composites found to be stable at higher temperature and regenerated using MgSO4 eluting agent. The textile effluent colour was removed up to 50.35 and 54.95% using raw and modified clay, respectively. The modified clay showed promising efficiency for adsorption of synthetic BFBN and RFRN dyes from aqueous solution, which could be a viable option for the treatment of industrial wastewater and textile effluents.

Item Type:	Journal article
Publication Title:	International Journal of Biological Macromolecules
Creators:	Kausar, A., Sher, F., Hazafa, A., Javed, A., Sillanpää, M. and Iqbal, M.
Publisher:	Elsevier BV
Date:	15 October 2020
Volume:	161
ISSN:	0141-8130
Identifiers:	Number Type 10.1016/j.ijbiomac.2020.05.266 DOI 1567979 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Ward
Date Added:	26 Jul 2022 11:00
Last Modified:	26 Jul 2022 11:00
URI:	https://irep.ntu.ac.uk/id/eprint/46726

Actions (login required)

Edit View

Statistics

Views

Downloads