Modeling and simulation of VOCs removal by nonthermal plasma discharge with photocatalysis in a continuous reactor: Synergetic effect and mass transfer

Assadi, Aymen Amine; Bouzaza, Abdelkrim; Merabet, Smail; Wolbert, Dominique

doi:10.1016/j.cej.2014.07.050

Cited by 54 publications

(22 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the CO 2 selectivity of Plasma+TiO 2 +UV system is between that of the plasma system alone and that of TiO 2 +UVsystem. The same phenomenon was also observed by Assadi et al [ 161 ] in the degradation experiment of isovaleraldehyde. They found that the degradation efficiency of Plasma+TiO 2 +UV system on isovaleraldehyde was 5–15% higher than that of the sum of independent plasma and TiO 2 + UV system, whereas the CO 2 selectivity was 20% lower than that of TiO 2 +UV system.…”

Section: Degradation Of Vocs By Plasma Catalysissupporting

confidence: 87%

“…However, the degradation mechanism of this synergistic effect has not been understood in‐depth. [ 161 ]…”

Section: Degradation Of Vocs By Plasma Catalysismentioning

confidence: 99%

“…There is some research that places UV lamps in the plasma region to excite the photocatalyst to give full play to the advantages of the photocatalyst. Referring to the mass transfer process of isovaleraldehyde degradation by the Plasma+TiO 2 +UV system conducted by Assadi et al, [ 161 ] the process of VOC degradation by plasma and TiO 2 under the condition of external ultraviolet radiation is analyzed, as shown in Figure 7. Under the combined excitation of plasma and ultraviolet radiation, TiO 2 provides a hole‐electron pair, which reacts with O 2 and H 2 O to further generate active particles.…”

Section: Degradation Of Vocs By Plasma Catalysismentioning

confidence: 99%

“…However, the degradation mechanism of this synergistic effect has not been understood in-depth. [161] The spectral range and intensity emitted from gas discharge vary with the gas atmosphere. When the emitted ultraviolet radiation energy is higher than 3.2 eV, it can excite the electrons of TiO 2 to jump from the valence band to the conduction band, generating a hole-electron pair.…”

Section: Mechanism Of Synergistic Degradation Of Vocs By Plasma Andmentioning

confidence: 99%

See 3 more Smart Citations

Progress in degradation of volatile organic compounds based on low‐temperature plasma technology

Chang

Wang

Zhang

2020

Plasma Processes & Polymers

View full text Add to dashboard Cite

On the basis of plasma technology, the progress of the volatile organic compounds' (VOCs') degradation by low‐temperature plasma alone is discussed first, including reactor types, influencing factors of plasma degradation of VOCs and the reaction mechanism between plasma and VOCs. Then, the research status of three VOC degradation technologies (catalysis, adsorption, and biotechnology) and their synergistic degradation of VOCs with plasma are reviewed, including the effect of catalyst position on VOC degradation, the interaction mechanism between plasma and catalyst; the factors affecting the adsorption of VOCs by carbon‐based adsorbents and zeolite, the degradation of VOCs by plasma‐assisted adsorbent; the features of different biological systems, the influencing factors of VOC degradation by the biotrickling system, and the degradation of VOCs by plasma‐assisted biotreatment. Finally, the prospects of developments in high‐tech based on plasma are discussed.

show abstract

Section: Degradation Of Vocs By Plasma Catalysissupporting

confidence: 87%

“…However, the degradation mechanism of this synergistic effect has not been understood in‐depth. [ 161 ]…”

Section: Degradation Of Vocs By Plasma Catalysismentioning

confidence: 99%

Section: Degradation Of Vocs By Plasma Catalysismentioning

confidence: 99%

Section: Mechanism Of Synergistic Degradation Of Vocs By Plasma Andmentioning

confidence: 99%

See 2 more Smart Citations

Progress in degradation of volatile organic compounds based on low‐temperature plasma technology

Chang

Wang

Zhang

2020

Plasma Processes & Polymers

View full text Add to dashboard Cite

show abstract

“…The value of mathematical model development is widely recognized (Alvarez et al, ; Assadi, Bouzaza, Merabet, & Wolbert, ; Beretta et al, ; Haghshenas, Sadeghi, & Ghadiri, ; Ivanchina, Ivashkina, Dolganova, & Platonov, ; Klenov, Makarshin, Gribovskiy, Andreev, & Parmon, ; Machado et al, ; Melo, Bacelos, Pereira, Lira, & Gidaspow, ; Scheithauer, Grützner, Zollinger, von Harbou, & Hasse, ; Trad, Vial, Fontaine, & Larroche, ), and it includes several stages: experimental data investigation formulation of hypotheses on the process mechanism development of model equations (material and heat balances) the algorithm design formulating the adequacy criteria identification of the model parameters model verification using the model for improvement of the process conditions …”

Section: Methodsmentioning

confidence: 99%

Alkylaromatics in Detergents Manufacture: Modeling and Optimizing Linear Alkylbenzene Sulfonation

Dolganova

Dolganov

Иванчина

et al. 2018

J Surfact & Detergents

View full text Add to dashboard Cite

Linear alkylbenzene sulfonic acid (ASA) is the main ingredient of many commercial formulations for industrial and domestic synthetic detergents. The current industrial ASA production method includes sulfonation of linear alkylbenzene (LAB) with sulfur trioxide in tubular falling-film reactors. The present study investigates the influence of light alkylaromatics on the efficiency of ASA production. After dealkylation and polymerization, these aromatic compounds form viscous components in the sulfonation reactor. This increases the organic liquid viscosity and disrupts the uniformity of sulfonation. We present the results of IR analysis of the LAB and ASA samples, which indicate that the viscous components are sulfones that are part of the unsulfonated matter. With due consideration of the sulfonation process reaction network, we developed a mathematical model for a sulfonation reactor considering the alkylaromatics content in the feed flow and its effect on the reaction rates. The results allowed the improvement of sulfonation process in terms of increasing the number of days between the reactor washings. The sulfur flow rate increased from 371.7 to 380.9 kg h −1 at the end of this period for the aromatics content in LAB of 4 wt.% and from 372.1 to 380.1 kg h −1 for aromatics content in LAB of 6 wt.%. The proposed modifications of the process modes can increase the SO 3 conversion up to 98%.Keywords Linear alkylbenzene sulfonic acid Á Sulfur trioxide Á Sulfones Á Mathematical model of sulfonation process J Surfact Deterg (2018) 21: 175-184.

show abstract

Fluid Field Modulation in Mass Transfer for Efficient Photocatalysis

et al. 2022

View full text Add to dashboard Cite

Mass transfer is an essential factor determining photocatalytic performance, which can be modulated by fluid field via manipulating the kinetic characteristics of photocatalysts and photocatalytic intermediates. Past decades have witnessed the efforts and achievements made in manipulating mass transfer based on photocatalyst structure and composition design, and thus, a critical survey that scrutinizes the recent progress in this topic is urgently necessitated. This review examines the basic principles of how mass transfer behavior impacts photocatalytic activity accompanying with the discussion on theoretical simulation calculation including fluid flow speed and pattern. Meanwhile, newly emerged viable photocatalytic micro/nanomotors with self‐thermophoresis, self‐diffusiophoresis, and bubble‐propulsion mechanisms as well as magnet‐actuated photocatalytic artificial cilia for facilitating mass transfer will be covered. Furthermore, their applications in photocatalytic hydrogen evolution, carbon dioxide reduction, organic pollution degradation, bacteria disinfection and so forth are scrutinized. Finally, a brief summary and future outlook are presented, providing a viable guideline to those working in photocatalysis, mass transfer, and other related fields.

show abstract

Modeling and simulation of VOCs removal by nonthermal plasma discharge with photocatalysis in a continuous reactor: Synergetic effect and mass transfer

Cited by 54 publications

References 22 publications

Progress in degradation of volatile organic compounds based on low‐temperature plasma technology

Progress in degradation of volatile organic compounds based on low‐temperature plasma technology

Alkylaromatics in Detergents Manufacture: Modeling and Optimizing Linear Alkylbenzene Sulfonation

Fluid Field Modulation in Mass Transfer for Efficient Photocatalysis

Contact Info

Product

Resources

About