Production and CO2 Adsorption Characteristics of Activated Carbon from Bamboo by CO2 Activation Method
Sustainable process-product development & green chemistry
Sustainable & Clean Technologies - III: Combustion & Emission (T1-6P)
Keywords: Bamboo, Activated Carbon, CO2 Activation Method, CO2 Adsorption
The activated carbon was produced from Sancheong bamboo by carbon dioxide gas activation methods. The carbonization of raw material was conducted at 900℃, and CO2 activation reactions were conducted under various conditions: activation temperatures of 750∼900℃, flow rates of carbon dioxide 5∼30 cm3/g-char•min, and activation time of 2∼5 h. The yield, adsorption capacity of iodine and methylene blue, specific surface area and pore size distribution of the prepared activated carbons were measured. The adsorption capacity of iodine(680.8∼1450.1mg/g) and methylene blue(23.5∼220 mg/g) increased with increasing activation temperature and activation time. The adsorption capacity of iodine and methylene blue increased with the CO2 gas quantity in the range of 5∼18.9 cm3/g-char•min. But those decreased over those range due to the pore shrinkage. The specific volume of the mesopore and macropore of bamboo activated carbon were 0.65∼0.91 cm3/g. Because of this large specific volume, it can be used to the biological activated carbon process. Bamboo activated carbon phisically adsorbed the CO2 of maximum 106 mg/g-A.C in the condition of 90% CO2 and adsorption temperature of 20℃. The CO2 adsorption ability of bamboo activated carbon was not changed in the 5 cyclic test of desorption and adsorption.
Presented Monday 17, 13:30 to 15:00, in session Sustainable & Clean Technologies - III: Combustion & Emission (T1-6P).
