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  2. Ozone–oxygen cycle - Wikipedia

    en.wikipedia.org/wiki/Ozone–oxygen_cycle

    In addition to ozone photodissociation becoming a more dominant removal reaction, catalytic ozone destruction due to free radicals (mainly atomic hydrogen, hydroxyl, nitric oxide, chlorine and bromide) increases the effective ozone conversion reaction rate. Both processes act to increase ozone removal, leading to a more moderate increase of ...

  3. Hydroxyl radical - Wikipedia

    en.wikipedia.org/wiki/Hydroxyl_radical

    The hydroxyl radical can damage virtually all types of macromolecules: carbohydrates, nucleic acids , lipids (lipid peroxidation) and amino acids (e.g. conversion of Phe to m-Tyrosine and o-Tyrosine). The hydroxyl radical has a very short in vivo half-life of approximately 10 −9 seconds and a high reactivity. [5]

  4. Advanced oxidation process - Wikipedia

    en.wikipedia.org/wiki/Advanced_oxidation_process

    Hydroxyl radicals are produced with the help of one or more primary oxidants (e.g. ozone, hydrogen peroxide, oxygen) and/or energy sources (e.g. ultraviolet light) or catalysts (e.g. titanium dioxide). Precise, pre-programmed dosages, sequences and combinations of these reagents are applied in order to obtain a maximum •OH yield.

  5. Ozone micro-nanobubbles - Wikipedia

    en.wikipedia.org/wiki/Ozone_micro-nanobubbles

    Hydroxyl radicals will form by the shrinking of microbubbles; it is due to an increase in the value of electromotive force on the liquid interface. Hydroxyl radical(•OH) and H + accumulate rapidly at the bubble interface. Ozone reacts with hydroxyl ions and hydroxyl radicals will form. The formation of hydroxyl radicals is pH-dependent.

  6. Radical (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Radical_(chemistry)

    The hydroxyl radical, Lewis structure shown, contains one unpaired electron. Lewis dot structure of a Hydroxide ion compared to a hydroxyl radical. In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron.

  7. NOx - Wikipedia

    en.wikipedia.org/wiki/NOx

    Then, photolysis of NO 2 leads to the formation of ozone and the further formation of hydroxyl radicals (·OH) through ozone photolysis. Since the major sink of methane in the atmosphere is by reaction with • OH radicals, the NO x emissions from ship travel may lead to a net global cooling. [ 34 ]

  8. Ozonolysis - Wikipedia

    en.wikipedia.org/wiki/Ozonolysis

    Ozone cracking is a form of stress corrosion cracking where active chemical species attack products of a susceptible material. The rubber product must be under tension for crack growth to occur. Ozone cracking was once commonly seen in the sidewalls of tires , where it could expand to cause a dangerous blowout , but is now rare owing to the use ...

  9. In situ chemical oxidation - Wikipedia

    en.wikipedia.org/wiki/In_situ_chemical_oxidation

    In addition, because ozone is a gas, adding ozone to the bottom of the contaminant pool forces the ozone to rise up through the contaminants and react. Because of this property, ozone can also be delivered more quickly. Also, in theory, H 2 O 2 co-injected with ozone will result in -OH ions, which are very strong oxidants. [3]