Numerical study of mass transfer and desorption behaviors in deformable porous media using a coupling lattice Boltzmann model

Ma, Qiang; Zhao, Lijuan; Su, Huaneng; Chen, Zhenqian; Xu, Qian

doi:10.1103/physreve.102.023309

Cited by 6 publications

(2 citation statements)

References 61 publications

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“…The toluene concentration distribution and (B) the adsorbed toluene amount distribution along the flow direction during the regeneration process with or without ozonization reaction (Fo = 6.67) concentration upturn period of the desorption process. [39] However, due to the decreasing desorption rate and the increasing ozone concentration as time passes, the role of ozonization becomes more noticeable within the downturn stage of toluene concentration. Because of the toluene degraded by ozone, the average toluene concentration during the combined regeneration process is lower than the concentration of desorption without ozonization reaction at the same dimensionless time.…”

Section: Discussionmentioning

confidence: 99%

A pore‐scale investigation for recovering adsorptive capacity of activated carbon fibre felt using electrothermal desorption combined with ozonization in‐situ degradation method

Weng

et al. 2022

Can J Chem Eng

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Porous activated carbon fibre (ACF) materials, as a recycled absorbent, have been widely applied in the harmless disposal of volatile organic chemicals (VOCs). In order to reduce the energy consumption of cyclic regeneration process and avoid second pollution of high concentration VOCs, there is an urgent need to develop a synergistic regeneration method to recover the adsorptive capacity of ACF and achieve the in‐situ degradation of VOCs simultaneously. Due to the outstanding oxidation performance of ozone, ozonization was used to degrade VOCs adsorbed by absorbent materials and has a potential advantage in combination with the traditional electrothermal desorption technology. In this work, a three‐dimensional pore‐scale lattice Boltzmann method (LBM) is established to solve the convective heat and mass transfer processes considering the desorption and ozonization effects. Using this numerical model, a pore‐scale simulation is performed to investigate the reactive and desorptive transport behaviours in the reconstructed pore structure of ACF felt, which is regenerated using the electrothermal desorption process combined with the ozonization degradation method. The simulation works reveal the effects of key operation parameters on the desorption and degradation mechanisms into the pores of ACF felt during this combined regeneration process. The numerical results show that the flow velocity of carrier gas plays an important role on the performance of the combined regeneration process. The approach of reducing the carrier gas velocity would obviously improve the degradation ratio of VOC and the efficiency of the combined regeneration process.

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Section: Discussionmentioning

confidence: 99%

A pore‐scale investigation for recovering adsorptive capacity of activated carbon fibre felt using electrothermal desorption combined with ozonization in‐situ degradation method

Weng

et al. 2022

Can J Chem Eng

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“…Ma Qiang et al [78,79] used the immersed boundary lattice Boltzmann method to study in depth the heat and mass transfer process in deformable porous media on the pore scale, elucidating the coupling relationship between heat and mass transfer processes and Equations ( 1)-( 4) correspond to the energy and moisture conservation of the solid and gas media in the bed, respectively.…”

Section: Study On Ultrasound Enhancement Of Moisture Transport In Por...mentioning

confidence: 99%

A Review: Study on the Enhancement Mechanism of Heat and Moisture Transfer in Deformable Porous Media

Li,

Ma,

Chen

et al. 2023

Processes

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The heat and moisture transfer process in deformable porous media commonly exists in material drying, solid waste treatment, bioengineering, and so on. The transfer process is accompanied by deformation of the solid skeleton and pore interface structure, which limits the transfer rate and affects quality. Microwave and ultrasound are the main representatives of reinforcement technology. However, as the moisture decreases, the energy utilization efficiency of microwaves decreases significantly. Based on the experimental and theoretical methods, the enhancement mechanism of ultrasound on the process is studied, which provides guidance for the wide application of ultrasonic enhancement. With the increase in ultrasound power, the pore area and the moisture effective diffusion coefficient gradually increase. A macroscope mathematical model for ultrasonic-coupled thermal-hydro-mechanical modeling is developed, and the results show that ultrasound increases the temperature gradient within material, resulting in higher moisture transmission rates with an ordered direction, and the alternating expansion and compression process results in smaller macroscopic deformations. Subsequently, the drying kinetic characteristics of typical deformable porous media such as municipal sludge, porous fibers, and activated alumina particles are investigated. The process parameters of the ultrasonic assisted drying system are optimized using the response surface method and artificial neural network model.

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Pore-Scale Simulation of Fluid Flow Through Deformable Porous Media Using Immersed Boundary Coupled Lattice Boltzmann Method

Mou

Chen

2021

Transp Porous Med

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Numerical study of mass transfer and desorption behaviors in deformable porous media using a coupling lattice Boltzmann model

Cited by 6 publications

References 61 publications

A pore‐scale investigation for recovering adsorptive capacity of activated carbon fibre felt using electrothermal desorption combined with ozonization in‐situ degradation method

A pore‐scale investigation for recovering adsorptive capacity of activated carbon fibre felt using electrothermal desorption combined with ozonization in‐situ degradation method

A Review: Study on the Enhancement Mechanism of Heat and Moisture Transfer in Deformable Porous Media

Pore-Scale Simulation of Fluid Flow Through Deformable Porous Media Using Immersed Boundary Coupled Lattice Boltzmann Method

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