The simultaneous adsorption of toluene and naphthalene onto activated carbon fiber

• Main Authors: Huang, Chun-Yi, 黃存逸
• Other Authors: Liu Zhen-Shu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/7km7z5

碩士 === 明志科技大學 === 環境與安全衛生工程系環境工程碩士班 === 104 === This study used a fixed-bed reactor to perform an experiment involving the adsorption of naphthalene by activated carbon fibers (ACFs). In addition, toluene was added to explore the competitive adsorption of naphthalene and toluene by ACFs. The operation conditions included three ACFs, the retention time (0.09, 0.18, 0.23 and 0.32sec), the adsorption temperature (70 and 100°C), the inlet concentrations of naphthalene (60, 80 and100 ppm), and the inlet concentrations of toluene (500, 700 and 1000 ppm)。From the different ACFs experiments, this study determined that, although the ACF-C has the highest specific surface area, its saturated adsorption capacity of naphthalene was the lowest. According to the results of BET analysis, it was found that mesopore volume of ACFs was the determinant parameter for naphthalene adsorption. The results also indicated that when naphthalene existed alone, the optimal conditions for naphthalene adsorption by ACFs was at the naphthalene concentration of 100 ± 5 ppm, the adsorption temperature of 70°C, the retention time of 0.23 sec, and the flow rate of 500 sccm. The optimal saturated adsorption capacity of naphthalene was 497 mg/g. In addition, the results of the competitive adsorption of ACF in adsorbing naphthalene and toluene indicated that the effect of the existence of toluene on the saturated adsorption capacity of naphthalene by ACFs was insignificant. When naphthalene and toluene coexisted in the gas, the naphthalene was prior adsorbed by ACFs.