活性炭フィルタにおけるガス状有機物の多成分吸着挙動の解析

概要

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In an attempt to predict lifetime of charcoal filter designed to remove gaseous organic compounds in the air, authors have developed a model to simulate adsorption and desorption of multicomponent organic compounds in the filter. In adsorption equilibrium, this model is theoretically conformed of Dubinin-Astakhov equation. In order to give considerations to displacement adsorption phenomenon in lifetime prediction, this simulation model is designed to express the concept that organic compounds of different types share or compete to each other for the limited number of adsorption sites. Authors have validated this simulation model by comparing simulated and measured adsorption breakthrough curves for multicomponent system. Three types of charcoal filters are used in this validation. The prediction for the hydrocarbon is always satisfactory. However the adsorption capacity for the esters with middle boiling point is overestimated. Authors consider that this overestimation is due to neglect difference of affinity caused by dipole moment of adsorbate.
2006-05-30