Residence time distribution analysis and kinetic study of toluene photo-degradation using a continuous immobilized photoreactor

Abstract

The photocatalytic degradation of volatile organic compounds is an innovative intensification technology.In this study, photocatalytic degradation of toluene has been investigated in a novel continuous immobilized photoreactor and the flow regimes were characterized and modeled by means of residence time distribution (RTD) of the gas phase. RTD analysis indicates that the flow regime in such a reactor cannot be considered as perfect plug and that a significant axial dispersion is available. A compartment model consisting of fourteen continuous stirred tank reactors was assigned to describe the flow pattern in the reactor. A Langmuir-Hinshelwood (L-H) kinetics scheme has been used to describe the degradation of toluene to model the behavior of the reaction system. A number of different assumptions were made, i.e. the perfect plug flow model, the plug-flow with axial dispersion model and the continuous stirred tank reactors in series model. A comparison was made between the sum of the square errors (SSE) for experimental and predicted degradation ratios for each flow model revealing that continuous stirred tank reactors in series were a better description for the photocatalytic degradation of toluene.

Analysis Method of Black Liquor Pyrolysis and Gasification Using Deconvolution Technique to Obtain the Real Time Gas Production Profile

“…For the gasification experiment, a mixture of CO2 gas and nitrogen was used. In general, the detected gas concentration profile had a similar shape with the other references (Jafarikojour et al, 2014;Serres et al, 2018;Wojewódka et al, 2019).…”

Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

“…S7). Thus our experimental reactor can be considered as a plug flow reactor (Jafarikojour et al, 2014).…”

Photocatalysis of Phenol Using a Spinning Disc Photoreactor Immobilized with TiO2 Nanoparticles: Hydrodynamic Modeling and Reactor Optimization

“…The main necessity for the estimation of intrinsic kinetic coefficients independent from the configuration of the reactor for the performance evaluation of it, is using the reactor which operates under conditions that photon and mass transfer limitations are not considerable . There are some kinetic studies which consider the hydrodynamic behavior of a SDR as a plug flow reactor. ,, Consideration of the reactor hydrodynamic model in a kinetics study is necessary for the determination of intrinsic kinetic parameters independent from their configuration. , …”