Hybrid nanocellulose material as an adsorbent to remove reactive yellow 2 dye

Mello, BL, Thue, PS, da Silva, PV, Saucier, C, dos Reis, GS, Machado, FM, de Avila Delucis, R, Naushad, M, Sher, F ORCID: https://orcid.org/0000-0003-2890-5912, Seliem, MK and Lima, EC, 2024. Hybrid nanocellulose material as an adsorbent to remove reactive yellow 2 dye. Scientific Reports, 14: 20074. ISSN 2045-2322

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Abstract

Textile dyes are frequently disposable in aqueous effluents, making it difficult to remove them from industrial effluents before their release to natural waters. This paper deals with the fabrication of cellulose-based adsorbents by reacting nanocelulose crystalline (nanocel) with N-[3-(trimethoxysilyl)propyl]ethylenediamine (TMSPEDA), forming the hybrid (silylpropyl)ethylenediamine@nanocellulose (SPEDA@nanocel), which was employed as adsorbent for the uptake of reactive yellow 2 dye (RY-2) from aqueous effluents. Characterisation of SPEDA@nanocel was carried out using FTIR, SEM–EDS, XRD, TGA, surface area, pHpzc, and hydrophobicity/hydrophilicity ratio (HI). Also, adsorption studies were thoroughly investigated. The effect of initial pH indicated that the maximum uptake of RY-2 takes place at pH 2, which is an indication of the electrostatic mechanism. The kinetic data carried out with 250 and 500 mg L−1 RY-2 with SPEDA@nanocel followed better the nonlinear fractional-like pseudo-first-order model. The t0.5 and t0.95 for the dye uptake were about 30 and 141 min, respectively. The equilibrium data from 10 to 45 °C indicated that the Liu isotherm model was the best-fitted isothermal model. The maximum sorption capacity attained was 112.3 mg g−1 at 45 °C. The thermodynamic data have shown that the equilibrium was favorable and endothermic, and the ΔH° was compatible with an electrostatic attraction between RY-2 and SPEDA@nanocel. Experiments of desorption of loaded adsorbent showed promising results for real applications since at least 5 adsorption/desorption cycles could be employed without significant changes in the recovery and with high precision.

Item Type:	Journal article
Publication Title:	Scientific Reports
Creators:	Mello, B.L., Thue, P.S., da Silva, P.V., Saucier, C., dos Reis, G.S., Machado, F.M., de Avila Delucis, R., Naushad, M., Sher, F., Seliem, M.K. and Lima, E.C.
Publisher:	Springer Science and Business Media LLC
Date:	29 August 2024
Volume:	14
ISSN:	2045-2322
Identifiers:	Number Type 10.1038/s41598-024-70906-5 DOI 2556444 Other
Rights:	© The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Divisions:	Schools > School of Science and Technology
Record created by:	Melissa Cornwell
Date Added:	27 Jan 2026 11:20
Last Modified:	27 Jan 2026 11:20
URI:	https://irep.ntu.ac.uk/id/eprint/55137

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