Enhanced degradation of gaseous benzene by a Fenton reaction

Liu, Gaoyuan; Huang, Haibao; Xie, Ruijie; Feng, Qiuyu; Fang, Ruimei; Shu, Yajie; Zhan, Yanhui; Ye, Xinguo; Zhong, Cheng

doi:10.1039/c6ra26016k

Cited by 42 publications

(20 citation statements)

References 34 publications

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“…6,7 It has been reported that the free radicals can convert benzene into phenol or other oxidation products. 18,19 Thus, it is expected that benzene adsorbed on the naturally Fe-containing activated carbon samples can be hydroxylated or oxidized through the Fenton reaction during treatment with the H 2 O 2 solution (eqn(1)-(3)). Fig.…”

Section: Characterization Of the Treated Activated Carbon Samplesmentioning

confidence: 99%

“…31 Thus, during treatment with the H 2 O 2 solution, benzene adsorbed on the naturally Fe-containing activated carbon samples can be hydroxylated or oxidized to phenol or other oxidation products. 18,19 It was reported that H 2 O 2 on activated carbon could be decomposed into hydroxyl groups based on the Haber-Weiss mechanism and that the formation rate of hydroxy radicals at pH > 8.0 might be low. [32][33][34] Activated carbon + H 2 O 2 / activated carbon + + OH À + cOH (4)…”

Section: Benzene Decompositionmentioning

confidence: 99%

“…This demonstrates that benzene can be decomposed into various intermediates by heat generated from the reaction of activated carbon with DI water or H 2 O 2 solution. 19,[36][37][38][39] Thus, the paths for decomposition of benzene involve benzene ring excitation or pyrolysis. 40,41 However, herein, in the rst step (in DI water), benzene was decomposed into maleic acid and fumaric acid ( Table 2).…”

Section: Benzene Decompositionmentioning

confidence: 99%

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Cycling system for decomposition of gaseous benzene by hydrogen peroxide with naturally Fe-containing activated carbon

Lee

Han

et al. 2020

RSC Adv.

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Section: Characterization Of the Treated Activated Carbon Samplesmentioning

confidence: 99%

Section: Benzene Decompositionmentioning

confidence: 99%

Section: Benzene Decompositionmentioning

confidence: 99%

See 1 more Smart Citation

Cycling system for decomposition of gaseous benzene by hydrogen peroxide with naturally Fe-containing activated carbon

Lee

Han

et al. 2020

RSC Adv.

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“…5b). With the increas of phenol, in addition to the initial benzene, phenol became another target compound for HO • , and resulted in the increase of catechol and hydroquinone [40,51]. Since catechol and hydroquinone have the ability to reduce the initial Fe(III) to Fe(II), Fe(II) recovery (Fig.…”

Section: H 2 O 2 Variation In Thementioning

confidence: 99%

Insight into CaO2-based Fenton and Fenton-like systems: Strategy for CaO2-based oxidation of organic contaminants

Xue

Sui

Brusseau

et al. 2019

Chemical Engineering Journal

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This study conducted a comparison of the CaO 2 -based Fenton (CaO 2 /Fe(II)) and Fenton-like (CaO 2 /Fe(III)) systems on their benzene degradation performance. The H 2 O 2 , Fe(II), Fe(III), and HO • variations were investigated during the benzene degradation. Although benzene has been totally removed in the two systems, the variation patterns of the investigated parameters were different, leading to the different benzene degradation patterns. In terms of the Fe(II)/Fe(III) conversion, the CaO 2 /Fe(II) and CaO 2 /Fe(III) systems were actually inseparable and had the inherent mechanism relationships. For the CaO 2 /Fe(III) system, the initial Fe(III) must be converted to Fe(II), and then the consequent Fenton reaction could be later developed with the regenerated Fe(II). Moreover, some benzene degradation intermediates could have the ability to facilitate the transformation of the Fe(III) to Fe(II) without the classic H 2 O 2 -associated propagation reactions. By varying the Fe(II) dosing method, an effective degradation strategy has been developed to take advantage of the two CaO 2 -based oxidation systems. The proposed strategy was further successfully tested in TCE degradation, therefore extending the potential for the application of this technique.

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“…These typical pollution sources including painting plants, petrochemical factories, and building materials factories in industrial parks normally make up a major proportion of the total odor pollutants emission, and they also occupy an irreplaceable role in promoting the city’s economy development [ 3 ]. Against this background, specific air monitoring systems and waste gas management methods have been abundantly developed to balance it out [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

The Regular Interaction Pattern among Odorants of the Same Type and Its Application in Odor Intensity Assessment

Yan

Liu

Jiang

et al. 2017

Sensors

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The olfactory evaluation function (e.g., odor intensity rating) of e-nose is always one of the most challenging issues in researches about odor pollution monitoring. But odor is normally produced by a set of stimuli, and odor interactions among constituents significantly influenced their mixture’s odor intensity. This study investigated the odor interaction principle in odor mixtures of aldehydes and esters, respectively. Then, a modified vector model (MVM) was proposed and it successfully demonstrated the similarity of the odor interaction pattern among odorants of the same type. Based on the regular interaction pattern, unlike a determined empirical model only fit for a specific odor mixture in conventional approaches, the MVM distinctly simplified the odor intensity prediction of odor mixtures. Furthermore, the MVM also provided a way of directly converting constituents’ chemical concentrations to their mixture’s odor intensity. By combining the MVM with usual data-processing algorithm of e-nose, a new e-nose system was established for an odor intensity rating. Compared with instrumental analysis and human assessor, it exhibited accuracy well in both quantitative analysis (Pearson correlation coefficient was 0.999 for individual aldehydes (n = 12), 0.996 for their binary mixtures (n = 36) and 0.990 for their ternary mixtures (n = 60)) and odor intensity assessment (Pearson correlation coefficient was 0.980 for individual aldehydes (n = 15), 0.973 for their binary mixtures (n = 24), and 0.888 for their ternary mixtures (n = 25)). Thus, the observed regular interaction pattern is considered an important foundation for accelerating extensive application of olfactory evaluation in odor pollution monitoring.

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Enhanced degradation of gaseous benzene by a Fenton reaction

Abstract: A wet scrubbing process coupled with advanced oxidation processes (AOP) has raised great interest for the abatement of volatile organic compounds (VOCs) owing to its strong oxidation capacity and few byproducts.

Cited by 42 publications

References 34 publications

Cycling system for decomposition of gaseous benzene by hydrogen peroxide with naturally Fe-containing activated carbon

Cycling system for decomposition of gaseous benzene by hydrogen peroxide with naturally Fe-containing activated carbon

Insight into CaO2-based Fenton and Fenton-like systems: Strategy for CaO2-based oxidation of organic contaminants

The Regular Interaction Pattern among Odorants of the Same Type and Its Application in Odor Intensity Assessment

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