In this work, we simulated a single-bed 4-step temperature swing adsorption-oxidation (TSAO) process for capture and in situ oxidation of benzene, as a model VOC, over Ni/ZrO2-SiO2, as a dual-function material (DFM). The TSAO cycles consisted of adsorption, preheating, desorption/oxidation, and cooling steps. The model sensitive parameters were estimated via parameter estimation and validated against experimental data. Extensive parametric analysis was carried out to investigate the effects of key process variables on the TSAO performance. Model results revealed relatively good prediction of the process. Under the conditions investigated, adsorption, oxidation and total removal efficiencies were estimated to be 76, 84 and 66%, respectively. It was also established that the proposed 4-step cyclic TSAO could be reduced to a 3-step TSAO process consisting of adsorption, heating/desorption/oxidation, and cooling steps without any loss in performance. Finally, it was demonstrated that indirect convective cooling is far superior to direct feed cooling.
B. O. Adebayo and F. Rezaei, "Modeling of Temperature Swing Adsorption-Oxidation of Volatile Organic Compounds," Chemical Engineering Science, vol. 250, article no. 117356, Elsevier, Mar 2022.
The definitive version is available at https://doi.org/10.1016/j.ces.2021.117356
Chemical and Biochemical Engineering
Keywords and Phrases
Numerical modeling; Process performance; Removal efficiency; TSAO; VOC
International Standard Serial Number (ISSN)
Article - Journal
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15 Mar 2022