Plasma–catalyst coupling for volatile organic compound removal and indoor air treatment: a review

Thévenet, F.; Sivachandiran, L.; Guaitella, Olivier; Barakat, Christelle; Rousseau, Antoine

doi:10.1088/0022-3727/47/22/224011

Cited by 176 publications

(91 citation statements)

References 129 publications

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“…Since uptake coefficients depict the probability for a molecule to be taken up by a surface when striking it, the decreasing trends in Figure 2 suggest a finite ability of the sample surface to decompose ozone in terms of molecules processed per time and surface unit. To that regard, the catalytic character of ozone uptake by Gobi dust during the steady-state uptake regime can be further characterized by the uptake rate rss (molecules cm −2 s −1 ) as defined by Equation (5).…”

Section: Resultsmentioning

confidence: 99%

“…Ozone is a key reactive species for both fundamental and applied research fields, such as atmospheric environments, ecosystems [1,2], medicine [3,4], plasma catalysis [5,6], and industry. Due to environmental concerns and the widespread applications of ozone-based remediation techniques, over the last two decades, the interactions of ozone with metal oxides, such as Al 2 O 3 [7][8][9][10][11], MnO 2 [12,13], Fe 2 O 3 [7,14], SiO 2 [15,16], CaO [17], TiO 2 [18], and MgO [19], have been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

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Geocatalytic Uptake of Ozone onto Natural Mineral Dust

et al. 2018

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geocatalytic Uptake of Ozone onto Natural Mineral Dust

et al. 2018

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“…Therefore, the abatement of VOCs has motivated research toward an efficient and economical approach. Nonthermal plasma (NTP) technology, as an alternative to conventional VOC abatement techniques, received increasing interest during recent decades [6][7][8][9][10][11][12][13][14][15]. However, the application of NTP for VOC abatement has three main drawback: first, the incomplete oxidation of primary pollutants with unwanted side-product emissions; second, the low mineralization rate of organic pollutants; and third, the low energy efficiency [16].…”

Section: Introductionmentioning

confidence: 99%

Plasma-Catalytic Mineralization of Toluene Adsorbed on CeO2

et al. 2018

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Abstract:In the context of coupling nonthermal plasmas with catalytic materials, CeO 2 is used as adsorbent for toluene and combined with plasma for toluene oxidation. Two configurations are addressed for the regeneration of toluene saturated CeO 2 : (i) in plasma-catalysis (IPC); and (ii) post plasma-catalysis (PPC). As an advanced oxidation technique, the performances of toluene mineralization by the plasma-catalytic systems are evaluated and compared through the formation of CO 2 . First, the adsorption of 100 ppm of toluene onto CeO 2 is characterized in detail. Total, reversible and irreversible adsorbed fractions are quantified. Specific attention is paid to the influence of relative humidity (RH): (i) on the adsorption of toluene on CeO 2 ; and (ii) on the formation of ozone in IPC and PPC reactors. Then, the mineralization yield and the mineralization efficiency of adsorbed toluene are defined and investigated as a function of the specific input energy (SIE). Under these conditions, IPC and PPC reactors are compared. Interestingly, the highest mineralization yield and efficiency are achieved using the in-situ configuration operated with the lowest SIE, that is, lean conditions of ozone. Based on these results, the specific impact of RH on the IPC treatment of toluene adsorbed on CeO 2 is addressed. Taking into account the impact of RH on toluene adsorption and ozone production, it is evidenced that the mineralization of toluene adsorbed on CeO 2 is directly controlled by the amount of ozone produced by the discharge and decomposed on the surface of the coupling material. Results highlight the key role of ozone in the mineralization process and the possible detrimental effect of moisture.

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“…Among these VOC removal techniques, the combination of non-thermal plasma with catalysts/sorbents, i.e., plasma-catalysis, is remarkably investigated during the last decade because of their improved performance such as increased energy efficiency and suppressed unwanted This could also be an effective regeneration technique compared to conventional techniques like thermal treatment, which often leads to catalytic deactivation owing to particle agglomerations on catalyst surfaces and poses high a cost. Recently Thevenet et al have partly reviewed the sequential treatment in their publication [37].…”

Section: Introductionmentioning

confidence: 99%

Abatement of VOCs with Alternate Adsorption and Plasma-Assisted Regeneration: A Review

et al. 2015

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Abstract:Energy consumption is an important concern for the removal of volatile organic compounds (VOCs) from waste air with non-thermal plasma (NTP). Although the combination of NTP with heterogeneous catalysis has shown to reduce the formation of unwanted by-products and improve the energy efficiency of the process, further optimization of these hybrid systems is still necessary to evolve to a competitive air purification technology. A newly developed innovative technique, i.e., the cyclic operation of VOC adsorption and NTP-assisted regeneration has attracted growing interest of researchers due to the optimized energy consumption and cost-effectiveness. This paper reviews this new technique for the abatement of VOCs as well as for regeneration of adsorbents. In the first part, a comparison of the energy consumption between sequential and continuous treatment is given. Next, studies dealing with adsorption followed by NTP oxidation are reviewed. Particular attention is paid to the adsorption mechanisms and the regeneration of catalysts with in-plasma and post-plasma processes. Finally, the influence of critical process parameters on the adsorption and regeneration steps is summarized.

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Plasma–catalyst coupling for volatile organic compound removal and indoor air treatment: a review

Cited by 176 publications

References 129 publications

Geocatalytic Uptake of Ozone onto Natural Mineral Dust

Geocatalytic Uptake of Ozone onto Natural Mineral Dust

Plasma-Catalytic Mineralization of Toluene Adsorbed on CeO2

Abatement of VOCs with Alternate Adsorption and Plasma-Assisted Regeneration: A Review

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