• 作者： Liou, Din-Chung; Tan, Chung-Sung
• 中文摘要： 本文探討利用超臨界二氧化碳脫附活性碳上之苯及甲苯。實驗數據顯示當二氧化碳密度固定時,脫附效率隨溫度增加而增加,在假設沒有軸向擴散下,本文提出一個二次方脫附模式,其中之參數均為密度及溫度之函數。由計算中可顯示脫附活化能隨密度增加而降低,且其符合Arrehenius表示式。利用所獲得之參數來模擬脫附百分比,其與實驗數據十分接近。
• 英文摘要： Desorption of activated carbon loaded with benzene and toluene with supercritical carbon dioxide was studied. The experimental data indicated that both the desorption efficiencies for benzene and toluene increased with temperature as long as the density of the supercritical CO/sub 2/ was kept constant. A mathematical model, assuming plug flow in the flowing phase and a second order desorption kinetics for the solid phase, was proposed in this study. The dependence of the model parameters on density was also reported. The calculated desorption activation energies were found to decrease with density and to follow the Arrhenius expression. The simulated results by the proposed model were found to agree well with the experimental data.
• 中文關鍵字： 超臨界二氧化碳; 脫附作用; 模式; 活性碳; 苯; 甲苯
• 英文關鍵字： Supercritical Co/Sub 2/; Desorption; Model; Activated Carbon; Benzene; Toluene