Isolation, Modification, and Characterization of Local Indonesia's Sugarcane Bagasse Cellulose for Dye‐Adsorbent Application

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Abstract
Cellulose and its derivatives have been widely used in various applications. Cellulose can be isolated from sugarcane bagasse waste. This research aims to isolate and modify the sugarcane bagasse cellulose to improve its characteristics and usability. Cellulose was isolated using the alkalization and bleaching method, wherein the alkalization processes the biomass was immersed in a sodium hydroxide solution and bleached using hydrogen peroxide. Cellulose modification was performed using alkali treatment and etherification stages with monochloroacetic acid in an isopropanol solvent. The β‐(1,4)‐glycosidic vibration absorption on both the bleaching products at 896 cm −1 confirmed pure cellulose, while a carbonyl group at 1610 cm −1 in the modified cellulose product confirmed the pure CMC product. The CMC obtained had lower thermal stability in the interval 241.35–299.87 compared to cellulose as its source, indicating an increase in the amorphous region. According to experimental findings from the MB adsorption investigation, citric acid‐crosslinked sugarcane bagasse derivatives of carboxymethyl cellulose (CMC) were more effective adsorbents for removing MB than commercial CMC with the same formulation (2 : 1). The study‘s findings also indicated that an increase in the percentage of MB degradation was correlated with an effect of adsorbent dose and contact time.

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