Giraudet Sylvain, Pré Pascaline, Le Cloirec Pierre
Ecole des Mines de Nantes, GEPEA UMR CNRS 6144, 4 rue Alfred Kastler, BP 2072 44307 Nantes Cedex 3, France.
Environ Sci Technol. 2009 Feb 15;43(4):1173-9. doi: 10.1021/es801494a.
A theoretical model was built to simulate the adsorption of volatile organic compounds (VOCs) onto activated carbons in a fixed bed. This model was validated on a set of experimental data obtained for the adsorption of acetone, ethyl formate, and dichloromethane onto five commercial activated carbons. The influence of operating conditions was modeled with various VOC contents atthe inlet of the adsorber and superficial velocities of the gas-phase from 0.14 to 0.28 m.s(-1). Breakthrough times and maximum temperature rises were computed with a coefficient of determination of 0.988 and 0.901, respectively. The simulation was then extended to the adsorption of mixtures of VOCs. From the comparison of simulation and experimental results, the advantage of accounting for dispersions of heat and mass is shown and the importance in taking into account the temperature effect on the equilibrium data is demonstrated.
建立了一个理论模型来模拟固定床中挥发性有机化合物（VOCs）在活性炭上的吸附过程。该模型基于一组关于丙酮、甲酸乙酯和二氯甲烷在五种商用活性炭上吸附的实验数据进行了验证。通过改变吸附器入口处的各种VOC含量以及气相表观速度从0.14至0.28 m·s⁻¹来模拟操作条件的影响。计算出的穿透时间和最大温度升高的决定系数分别为0.988和0.901。然后将模拟扩展到VOCs混合物的吸附。通过模拟结果与实验结果的比较，显示了考虑热质分散的优势，并证明了考虑温度对平衡数据影响的重要性。
