Rate coefficient for the H atom reaction with acrylate monomers in aqueous solution

Wojnárovits, László; Takács, Erzsébet; Dajka, Katalin; Emmi, Salvatore S.; Russo, Marialuisa; D’Angelantonio, Mila

doi:10.1016/j.tet.2003.09.008

Cited by 10 publications

(1 citation statement)

References 23 publications

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“…Especially in acidic solutions, tert-butyl alcohol is often added in order to scavenge hydroxyl radicals exclusively without disturbing the hydrogen atom reaction under investigation. During the last years, the value of rate constant of the reaction of hydrogen atoms with tert-butyl alcohol became ambiguous (Smaller et al, 1971;Alam et al, 2001;Wojnarovits et al, 2003Wojnarovits et al, , 2004. Because he knowledge of this rate is essential, further investigations have been carried out under conditions where the formation of the highly reactant isobutene was prevented as much as possible (Alam and Janata, 2004).…”

Section: Introductionmentioning

confidence: 99%

Examples of UV absorption measurements at the pulse radiolysis facility ELBENA

Janata¹

2007

Radiation Physics and Chemistry

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Section: Introductionmentioning

confidence: 99%

Examples of UV absorption measurements at the pulse radiolysis facility ELBENA

Janata¹

2007

Radiation Physics and Chemistry

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Radiation Induced Degradation of Organic Pollutants in Waters and Wastewaters

Wojnárovits

Takács

2016

Top Curr Chem (Z)

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In water treatment by ionizing radiation, and also in other advanced oxidation processes, the main goal is to destroy, or at least to deactivate harmful water contaminants: pharmaceutical compounds, pesticides, surfactants, health-care products, etc. The chemical transformations are mainly initiated by hydroxyl radicals, and the reactions of the formed carbon centered radicals with dissolved oxygen basically determine the rate of oxidation. The concentration of the target compounds is generally very low as compared to the concentration of such natural 'impurities' as chloride and carbonate/bicarbonate ions or the dissolved humic substances (generally referred to as dissolved organic carbon), which consume the majority of the hydroxyl radicals. The different constituents compete for reacting with radicals initiating the degradation. This manuscript discusses the radiation chemistry of this complex system. It includes the reactions of the primary water radiolysis intermediates (hydroxyl radical, hydrated electron/hydrogen atom), the reactions of radicals that form in radical transfer reactions (dichloride-, carbonate- and sulfate radical anions) and also the contribution to the degradation of organic compounds of such additives as hydrogen peroxide, ozone or persulfate.

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