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Performance of COsub.2 Adsorption on Modified Activated Carbons Derived from Okara Powder Waste: Impacts of Ammonia Impregnation
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Performance of COsub.2 Adsorption on Modified Activated Carbons Derived from Okara Powder Waste: Impacts of Ammonia Impregnation
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Performance of COsub.2 Adsorption on Modified Activated Carbons Derived from Okara Powder Waste: Impacts of Ammonia Impregnation
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Journal Article
Performance of COsub.2 Adsorption on Modified Activated Carbons Derived from Okara Powder Waste: Impacts of Ammonia Impregnation
2024
Overview
The activated carbons (ACs) derived from okara powder waste with high surface areas were modified with ammonia aqueous solution impregnation in an autoclave to enhance their CO[sub.2] adsorption properties. The impregnated ACs were characterized, where the chemical composition and properties of the ACs were analyzed by SEM-EDX and FTIR. Activated carbons were functionalized with ammonia aqueous solution (25%) through a hydrothermal process within 24, 48, and 72 h. The adsorption performance of CO[sub.2] onto carbon samples was experimentally evaluated through a TPD CO[sub.2] measurement. FTIR spectra confirm the N-containing in N-modified activated carbons and the presence of the –C=O stretch and N-H groups. CO[sub.2] uptakes of activated carbons are 0.24; 1.78; 2.24; and 1.26 mmol/g, which are relatively comparable with those of activated carbons studied in the literature.
Publisher
MDPI AG
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