Kinetics of ozone decomposition:  a dynamic approach

Gurol, Mirat D.; Singer, Philip C.

doi:10.1021/es00101a003

Cited by 191 publications

(101 citation statements)

References 4 publications

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“…The degradation pathways are such that the oxidation reaction involving hydroxyl radicals or O 3 react with aromatic compounds such as PAHs at near diffusion-controlled rates by abstracting hydrogen atoms or by addition to double bonds (Haag & Yao, 1992). Ozone may attack double bonds directly or it can form reactive hydroxyl radicals (which attack double bonds) by decomposing water (Legrini, Oliveros, & Braun, 1993;Gurol & Singer, 1982;Yao, Huang, & Masten, 1998a, 1998b. The reaction proceeds with complex pathways producing numerous intermediates.…”

Section: Chemical Degradationmentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Ukiwe¹,

Egereonu²,

Njoku³

et al. 2013

IJC

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The demand for processed petroleum products and agricultural produce has exposed our environment to polycyclic aromatic hydrocarbons (PAHs) contamination. PAHs stick to solid sediments and are ubiquitous including soil, water and air. Their presence in these media creates problems because consuming products obtained from these sources could be deleterious to human health since several of these compounds (benz(a)anthracene, benzo(a)pyrene, chrysene etc) have been implicated in causing tumors in animals and cancer in humans. The present review describes several remediation techniques which are efficient and cost effective in removing PAHs from the environment. Some of these conventional clean-up methods are not only environmental friendly; they also present a novel approach in reducing the ability of PAHs to cause prospective risk to humans and the ecosystem.

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Section: Chemical Degradationmentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Ukiwe¹,

Egereonu²,

Njoku³

et al. 2013

IJC

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“…These observations are well supported by results of other researchers. 2,15,16 Ozone selectively attacks the electron-rich sites, i.e. the aromatic rings and double bonds in the dye molecules, resulting in their degradation.…”

Section: Absorbed Ozone Dosementioning

confidence: 99%

Impact of ozonation on subsequent treatment of azo dye solutions

Khare¹,

Bose²,

Vankar³

2007

J of Chemical Tech & Biotech

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“…It is widely known [25][26][27][28] that both hydroxyl ion and hydrogen peroxide act as initiators of the ozone decomposition process in aqueous phase.…”

Section: Ozonation Of Nts In the Presence Of Activated Carbons 321mentioning

confidence: 99%

Ozonation of 1,3,6-naphthalenetrisulphonic acid catalysed by activated carbon in aqueous phase

Rivera‐Utrilla

Sánchez‐Polo

2002

Applied Catalysis B: Environmental

203

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This paper presents experimental results of the ozonation of a model aromatic sulphonic compound, 1,3,6-naphthalenetrisulphonic acid (NTS), in the presence of different activated carbons with different physical and chemical surface properties. Carbons used were commercial activated carbons (Ceca AC40, Norit, Merck, Witco, Ceca GAC, Filtrasorb 400, Sorbo) with or without demineralisation pre-treatment. Carbon samples were texturally and chemically characterised using N 2 adsorption isotherms, mercury porosimetry, pH PZC , selective neutralisation and elemental analysis. Results show that NTS was degraded by ozone at a faster rate in the presence of activated carbon, especially in the case of Sorbo, Ceca GAC and Norit carbons, which display catalytic activity, probably by enhancing ozone decomposition in aqueous phase in highly oxidative species. These catalytic properties seem to be favoured by both the basicity of the carbon surface and the higher macropore volume. Dissolved total organic carbon from the NTS degradation compounds was removed in the presence of activated carbon through both the catalytic activity of activated carbon to mineralise organic matter and the adsorption of these organic compounds on activated carbon.

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Kinetics of ozone decomposition: a dynamic approach

Cited by 191 publications

References 4 publications

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Impact of ozonation on subsequent treatment of azo dye solutions

Ozonation of 1,3,6-naphthalenetrisulphonic acid catalysed by activated carbon in aqueous phase

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