Title :
Optimization of the Preparation Conditions for Activated Carbons from Sugarcane Bagasse: An Agricultural Waste
Author :
Xu, ZeLong ; Zhu, Yinian ; Liang, Meina ; Zhang, Hua ; Liu, Huili
Author_Institution :
Coll. of Environ. Sci. & Eng., Guilin Univ. of Technol., Guilin, China
Abstract :
The low-cost activated carbon was prepared from sugarcane bagasse, an agricultural waste material, by chemical activation with different reagents. Orthogonal experimental design was applied to study the influence of activation temperature, activation time and chemical ratio of reagents to sugarcane bagasse on the chemical activation process of sugarcane bagasse. The optimal activated carbon was obtained using impregnation ratio of 0.39-0.78% AlCl3 solution, 900-1000¡ãC activation temperature and 100min activation time, resulting in the carbon yield of 25.50-26.15% and the maximum adsorption of iodine of 600.57-604.46 mg/g. The activation time and temperature played an important role on the yield and the iodine number of the prepared activated carbon. The yield of the activated carbon decreased and the iodine number of the activated carbon increased with increasing carbonization time. Overall weight loss was found to increase with increasing temperature, resulting in decreasing yield of activated carbon as temperature increased. The iodine number of the prepared activated carbon increased with increasing activation temperature. In general, there were no significant changes in the shape of the XRD and FT-IR graphs and in the SEM photographs for the sugarcane bagasse precursor and the activated carbons prepared under optimum conditions.
Keywords :
Fourier transform spectra; X-ray diffraction; activated carbon; adsorption; agriculture; chemical analysis; chemical technology; crops; industrial waste; infrared spectra; iodine; materials preparation; optimisation; FT-IR graphs; SEM photographs; XRD; activated carbons; activation temperature; activation time; agricultural waste material; carbon yield; carbonization time; chemical activation process; chemical ratio; impregnation ratio; iodine adsorption; low-cost activated carbon; optimal activated carbon; optimization; preparation conditions; reagents; sugarcane bagasse; weight loss; Carbon; Carbon dioxide; Chemicals; Production; Scanning electron microscopy; Surface treatment; Temperature; activated carbon; activation; process optimization; sugarcane bagasse;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-61284-278-3
Electronic_ISBN :
978-0-7695-4350-5
DOI :
10.1109/CDCIEM.2011.309