Modeling and Characterization of Steam-Activated Carbons Developed from Cotton Stalks Youssef, A.M.; Hassan, A.F.; Safan, M.;
Physically and chemically activated carbons (ACs) exhibited high adsorption capacities for organic and inorganic pollutants compared with other adsorbents due to their expanded surface areas and wide pore volume distribution. In this work, seven steam-ACs with different burn-off have been prepared from cotton stalks. The textural properties of these sorbents were determined using nitrogen adsorption at . The chemistry of the surface of the present sorbents was characterized by determining the surface functional C-O groups using Fourier transform infrared spectroscopy, surface pH, , and Boehm's acid-base neutralization method. The textural properties and the morphology of the sorbent surface depend on the percentage of burn-off. The surface acidity and surface basicity are related to the burn-off percentage. A theoretical model was developed to find a mathematical expression that relates the % burn-off to ash content, surface area, and mean pore radius. Also, the chemistry of the carbon surface is related to the % burn-off. A mathematical expression was proposed where % burn-off was taken as an independent factor and the other variable as a dependent factor. This expression allows the choice of the value of % burn-off with required steam-AC properties.
Comparative studies of porous carbon nanofibers by various activation methods,Lee, Hye-Min;Kang, Hyo-Rang;An, Kay-Hyeok;Kim, Hong-Gun;Kim, Byung-Joo;
Carbon letters, 2013. vol.14. 3, pp.180-185
Preparation of novolac-type phenol-based activated carbon with a hierarchical pore structure and its electric double-layer capacitor performance,Lee, Dayoung;Jung, Jin-Young;Park, Mi-Seon;Lee, Young-Seak;
Influence of KMnO4 oxidation on the electrochemical performance of pitch-based activated carbons, Research on Chemical Intermediates, 2014, 40, 7, 2527
Preparation of novolac-type phenol-based activated carbon with a hierarchical pore structure and its electric double-layer capacitor performance, Carbon letters, 2014, 15, 3, 192
Comparative studies of porous carbon nanofibers by various activation methods, Carbon letters, 2013, 14, 3, 180
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