A novel terpolymer nanocomposite (carboxymethyl β-cyclodextrin-nano chitosan-glutaraldehyde) for the potential removal of a textile dye acid red 37 from water.

Autor:	Elbadawy HA; Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt., El-Dissouky A; Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt., Hussein SM; Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt., El-Kewaey SR; Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt., Elfeky SA; Department of Laser Applications in Metrology, Photochemistry, and Agriculture, National Institute of Laser Enhanced Sciences (NILES), Cairo University, Cairo, Egypt., El-Ghannam G; Department of Laser Applications in Metrology, Photochemistry, and Agriculture, National Institute of Laser Enhanced Sciences (NILES), Cairo University, Cairo, Egypt.
Jazyk:	angličtina
Zdroj:	Frontiers in chemistry [Front Chem] 2023 Feb 01; Vol. 11, pp. 1115377. Date of Electronic Publication: 2023 Feb 01 (Print Publication: 2023).
DOI:	10.3389/fchem.2023.1115377
Abstrakt:	Carboxymethyl β-cyclodextrin-nanochitosan-glutaraldehyde (CM-βCD:nChi:Glu) terpolymer was prepared as a nano-adsorbent for the removal of the anionic textile dye, acid red 37. The terpolymer nanocomposite formation and characterization were clarified by FTIR, XRD, scanning electron microscopy, TEM, Brunauer-Emmett-Teller specific surface area (BET-SSA), and zeta potential. The removal of the textile dye was investigated by using the batch adsorption method, investigating the effect of pH, dye concentration, adsorbent dose, contact time, and temperature. The results revealed that the maximum removal efficiency of 102.2 mg/L of the dye is about 99.67% under pH 6.0, the optimal contact time is 5 min, and the adsorbent dosage is 0.5 g/L. At 29°C; the adsorption capacity increased from 81.29 to 332.60 mg/g when the initial concentration of the dye was increased from 40.97 to 212.20 mg/L. Adsorption kinetics fitted well with the pseudo-second-order model with a good correlation ( R 2 = 0.9998). The Langmuir isotherm model can best describe the adsorption isotherm model. Based on the experimental results, the CM-βCD:nChi:Glu terpolymer has a promising potential as an efficient novel adsorbent for the removal of textile dye acid red 37 from contaminated water. This study's preparation techniques and demonstrated mechanisms offer valuable insights into the adsorbent-adsorbate interactions mechanism, analysis, challenges, and future directions of beta-cyclodextrin/chitosan-based adsorbents in wastewater treatment. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2023 Elbadawy, El-Dissouky, Hussein, El-Kewaey, Elfeky and El-Ghannam.)
Databáze:	MEDLINE
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