Adsorptive Removal of Cationic Rhodamine B Dye from Aqueous Solutions Using Chitosan-Derived Schiff Base. Issue 4 (4th March 2022)

• Record Type: Journal Article
• Authors: Alakhras, Fadi; Ouachtak, Hassan; Alhajri, Eman; Rehman, Rabia; Al-Mazaideh, Ghassab; Anastopoulos, Ioannis; Lima, Eder C.
• Is Part Of: Separation science and technology. Volume 57:Issue 4(2022)
• Page Start: 542
• Page End: 554
• Publication Date: 2022-03-04
• Subjects: Rhodamine B dye -- chitosan -- wastewater treatment -- adsorption -- schiff-based adsorbent; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2021.1931326
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Chemical modification of chitosanwas successfully carried out using 2, 3-dihydroxy-benzaldehyde by a chemical condensation reaction. Fourier transform infrared (FTIR), Scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) surface area, Thermal gravimetric analysis (TGA), and X-Ray Diffraction methods were performed for characterization of the chitosan-derived Schiff base adsorbent material. The prepared adsorbent's efficiency in removing Rhodamine B dye from aqueous solution was explored, and experimental data were analyzed using isothermal and kinetic models. The BET surface area of chemically modified chitosan was greatly enhanced 125.8 m 2 g −1 with mesoporous characteristics. The maximum uptake was recorded at pH 8, while the maximum removal capacity was 233.4 mg g −1 (25°C). The kinetic data were better fitted using nonlinear pseudo-first-order.