| Abstrakt: |
Two types of modified nanocrystalline cellulose (NCC) were tested for low-concentration SO2 adsorption performance investigation. In this study, NCC was chemically modified with citric acid (CA) and ethylenediamine (EDA) to enhance its potential for SO2 capture. The study reports the successful incorporation of carboxylic acid and amine groups on the surface of cellulose, as shown by XRD, FTIR, TGA, SEM, and EDS analysis. Acid-based titration revealed that 83% of hydroxyl groups of NCC were carboxylate and 92% of supplied carboxyl groups reacted with EDA. The SO2 capture results indicated that EDA-CA-functionalized NCC showed a higher sorption capacity of 1.05 mg-SO2/gsorben at room temperature, atmospheric pressure, and a 20 mL/min flow rate compared to NCC and CA modified cellulose. This suggests that the amine groups in EDA-CA-NCC play a crucial role in adsorbing SO2, while the carboxylic groups in CA-NCC yielded a lower adsorption capacity. Article highlights: Effect of combination of functional groups on SO2 capture. [ABSTRACT FROM AUTHOR] |
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