Catalytic oxidation of benzene using DBD corona discharges

Lü, Bin; Zhang, X.; Yu, Xin; Feng, Tao; Yao, Shuiliang

doi:10.1016/j.jhazmat.2006.02.012

Cited by 75 publications

(44 citation statements)

References 20 publications

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“…Today, in order to remove VOCs from air, many end-ofpipe technologies, such as thermal combustion, catalytic oxidation, carbon adsorption, condensation and non-thermal plasma (NTP), have been developed. Among these technologies, NTP, especially electrical discharge in air, can be an effective method when the VOCs exist as impurities, i.e., at low concentration (typically less than 500 ppm) (McAdams 2001;Yan et al 2001a;Kim 2004;Lu et al 2006;Yan et al 2006;Zhu et al 2008 andGallon et al 2011). In NTP, electrons are sufficiently energized to a temperature level of several eV (several 10,000 K), whereas the background gases are still kept at room temperature level.…”

Section: Introductionmentioning

confidence: 99%

Comparison of styrene removal in air by positive and negative DC corona discharges

Zhang

Wang

et al. 2013

Int. J. Environ. Sci. Technol.

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This communication discusses styrene removal in air by positive and negative DC corona discharges. Experiments were performed with a wire-plate reactor and under a gas flow rate of 305 m 3 /h. In terms of averaged applied voltage and corona current, it is observed that the maximum negative corona current is always at least two times larger than the positive one at the same voltage level. At the same corona discharge energy density, however, the positive corona discharge produces around 2-6 times more ozone in comparison with the negative corona. For styrene removal, the positive corona processing is also around 2-6 times more effective than the negative corona. Humidity, an important and variable component of ambient air, affects the positive corona processing significantly. But it exerts a moderate effect on the negative corona. The differences between positive corona and negative corona discharges are attributed to their different discharge properties.

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Section: Introductionmentioning

confidence: 99%

Comparison of styrene removal in air by positive and negative DC corona discharges

Zhang

Wang

et al. 2013

Int. J. Environ. Sci. Technol.

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“…Table 1 summarizes the decomposition efficiency for benzene removal with various nonthermal plasma technologies (Vandenbroucke et al 2011). As shown in Table 1, the order of removal efficiency of dilute benzene followed the trends of Surface discharge (Kim et al 2008), DBD (Hyun-Ha et al 2005) [DBD (Zhu et al 2009) [ Multistage corona (Chavadej et al 2007) [ DBD (Park et al 2002) [ Present study [ Surface discharge (Kim et al 2005a) [ packed-bed DBD [ BaTiO 3 -packed-bed DBD (Harling et al 2008) [ DBD glow discharge (Lee et al 2004) [ DBD (Chae et al 2004) [ DBD (Lu et al 2006). SIE increases in the order of BaTiO 3 -packed bed (Harling et al 2008) \ Surface discharge (Kim et al 2008 (Park et al 2002).…”

Section: Comparison With Other Plasmasmentioning

confidence: 91%

“…SIE increases in the order of BaTiO 3 -packed bed (Harling et al 2008) \ Surface discharge (Kim et al 2008 (Park et al 2002). Accordingly, the concentration of benzene (ppm): Multistage corona (Chavadej et al 2007) [ Present study [ BaTiO 3 Packed bed (Harling et al 2008) [ DBDTiO 2 (Lu et al 2006) [ Packed-bed-DBD [ Surface discharge (Kim et al 2005a) [ Surface discharge (Kim et al 2008), DBD (Park et al 2002) [ DBDTiO 2 (Chae et al 2004), DBD glow discharge (Lee et al 2004). …”

Section: Comparison With Other Plasmasmentioning

confidence: 98%

“…Benzene is carcinogenic and exposure to it may cause drowsiness, dizziness, and unconsciousness. Moreover, repeated exposure can have adverse impact on human health including anemia, leukemia, blood diseases, and cancer (Weiss and Downs 1920;Lu et al 2006;Einaga and Futamura 2007;Ye et al 2008: Einaga andOgata 2010;Einaga et al 2011). Many researchers have reported non-thermal plasma (NTP) chemical processing as an effective tool for the removal of volatile organic compounds (VOCs) from gas stream.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic nonthermal plasma reactor for the abatement of low concentrations of benzene

Karuppiah

Reddy

et al. 2013

Int. J. Environ. Sci. Technol.

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Oxidative decomposition of dilute benzene in air was carried out in a dielectric barrier discharge reactor with inner metal fiber electrode that was later modified with transition metal oxides. Typical results indicated the best performance of the designed reactor for the removal of dilute benzene, where conventional techniques may not be efficient. The introduction of transition metal oxides in the discharge zone increased the conversion of benzene and shifted the product distribution to total oxidation. The performance of the reactor was further improved on humidification of air stream. The better performance of MnO x /SMF over CoO x and SMF may be due to in situ decomposition of ozone that may lead to the formation of strong oxidant atomic oxygen, whereas the best performance with TiO 2 /MnO x /SMF may be assigned due to the synergy between ozone decomposition on MnO x surface and photocatalytic action on TiO 2 .

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“…Recently, there have been many researches on the decomposition of VOCs using electron beam (EB), plasma, and photocatalytic oxidation/ UV and hybrid system treatment in order to resolve their problems (Boulamanti et al, 2008;Chmielewski et al, 2007;Chmielewski, 2007;Chaichanawong et al, 2005;Kim et al, 2005;Chmielewski and HajiSaeid, 2004;Tanthapanichakoon et al, 2004;Han et al, 2003;Licki et al, 2003). However, most plasma and corona methods needed energy over 100 J/L for efficient VOC treatment (Lu et al, 2006;Kim et al, 2005). On the other hand, in terms of its energy effectiveness, it was reported that efficiency of VOC removal by EB was 50 times higher than that by plasma or corona (Penetrante et al, 1997;Penetrante et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

A Review on VOCs Control Technology Using Electron Beam

Son¹,

Kim²,

Kim³

2010

ajae

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The removal characteristics for aromatic and aliphatic VOCs by electron beam (EB) were discussed in terms of several removal variables such as initial VOC concentration, absorbed dose, background gas, moisture content, reactor material and inlet temperature. It was reviewed that only reactor material was an independent variable among the potential control factors concerned. It was also suggested that main mechanism by EB should be radical reaction for the VOC removal rather than that by primary electrons. It was discussed that the removal efficiency of benzene was lower than that of hexane due to a closed benzene ring. In the case of aromatic VOCs, it was observed that the decomposition of the VOCs with more functional groups attached on the benzene ring was much easier than those with less ones. As for aliphatic VOCs, it was also implied that the longer carbon chain was, the higher the removal efficiency became. An EB-catalyst hybrid system was discussed as an alternative way to remove VOCs more effectively than EB-only system due to much less by-products. This hybrid included supporting materials such as cordierite, Y-zeolite, and γ-alumina.

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Catalytic oxidation of benzene using DBD corona discharges

Cited by 75 publications

References 20 publications

Comparison of styrene removal in air by positive and negative DC corona discharges

Comparison of styrene removal in air by positive and negative DC corona discharges

Catalytic nonthermal plasma reactor for the abatement of low concentrations of benzene

A Review on VOCs Control Technology Using Electron Beam

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