Sugarcane Bagasse-Derived Cellulose as an Eco-Friendly Adsorbent for Azo Dye Removal

Abstract

Cellulose has been isolated from sugarcane bagasse and applied for azo dye adsorption. Hydrolysis process for cellulose isolation was performed with different concentrations of HCl and the best concentration was 20% (v/v). Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Thermogravimetric Analysis (TGA). The increase in peak intensity at wavenumber 897 cm -1 was connected to cellulose stretching C-O and C-H, which resulted in greater cellulose content following hydrolysis. The thermal resistance of cellulose enhanced after treatments due to the significant intermolecular hydrogen bonding in the cellulose particles. Cellulose particles have been studied for their capacity to eliminate methylene blue (MB) from aqueous solutions. The analysis indicated that the OH, C=O, and C-O groups were particularly important in azo dye adsorption based on FTIR data. After 120 minutes of methylene blue adsorption and adsorption conditions at pH 10, a very high percent removal was obtained, precisely 99.7%. Based on adsorption kinetics, MB adsorption adopted a pseudo-second-order model (PSO) with an adsorption rate constant (k2) was 0.0276 g/mg.min. According to isotherm investigations, Freundlich isotherm model dependent adsorption (adjusted-R 2 =0.928), with Kf = 66.386 mg/g.

Natural Zeolite-Cellulose Phosphate Nanocomposites: Preparation and Advance Electrochemical Study

“…Cellulose particles have a high maximum adsorption capacity of methylene blue (66.386 mg/g). The high maximum adsorption capacity achieved on sugarcane bagasse-derived cellulose is evidence that it can be used to treat textile industry waste containing cationic dyes [27].…”