| Title: | Photocatalytic degradation of air pollutant by modified nano titanium oxide (TiO(2))in a fluidized bed photoreactor: Optimizing and kinetic modeling |
| Author(s): | Xu P; Ding C; Li Z; Yu R; Cui H; Gao S; |
| Address: | "State Key Laboratory of Bio-Fibers and Eco Textiles, Qingdao University, Qingdao, 266071, China. Electronic address: xpl@qdu.edu.cn. School of Computer and Information Science, Hubei Engineering University, Xiaogan, 432000, China. Electronic address: ccding1999@126.com. School of Computer and Information Science, Hubei Engineering University, Xiaogan, 432000, China. Electronic address: dingdang_hb99@qq.com. College of Micro-Nano Technology, Qingdao University, Shandong, Qingdao, 266071, China. Electronic address: yuruitao@qdu.edu.cn. College of Computer Science & Technology, Qingdao University, Shandong, Qingdao, 266071, China. Electronic address: cuihairong@qdu.edu.cn. State Key Laboratory of Bio-Fibers and Eco Textiles, Qingdao University, Qingdao, 266071, China. Electronic address: gsw@qdu.edu.cn" |
| DOI: | 10.1016/j.chemosphere.2023.137995 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Volatile organic compound (VOC) removal by photocatalytic oxidation (PCO) is the practical and economical process to reduce air pollutants. Many conditions, such as temperature, initial concentration of VOC, relative humidity, gas flow rate, and light intensity, affected this process. Therefore, finding the optimal operating conditions for the PCO process can increase the efficiency of the process and also operate the process more economically. Also, it is possible to scale up the process with more confidence by the kinetics modeling of the process and finding the rate constants. In this study, the effect of gas flow rate, light intensity, and VOC inlet concentration were investigated. The results show that the flow rate of 15 lit/min is more efficient, and the effect of the pollutant input concentration and light intensity directly affects the conversion percentage. The kinetic study of acetaldehyde removal was investigated in the fluidized bed reactor, and the best kinetic model was proposed based on reactor model regression on the outlet concentration data. The best model describes a langmuir-hynshelwood type model with adsorbed acetaldehyde's inhibition effect on the catalyst's surface. The R(2) coefficient for the best kinetic type is 0.98" |
| Keywords: | *Volatile Organic Compounds *Air Pollutants Catalysis Oxidation-Reduction Oxides Flow rate Kinetic study Photocatalyst-fluidized bed Volatile organic compound; |
| Notes: | "MedlineXu, Peilong Ding, Caichang Li, Zhimin Yu, Ruitao Cui, Hairong Gao, Shouwu eng England 2023/02/03 Chemosphere. 2023 Apr; 319:137995. doi: 10.1016/j.chemosphere.2023.137995. Epub 2023 Jan 30" |
