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Comparison of Chemistry Induced by Direct and Indirect Plasma treatment of Water to the Effect of UV Radiationстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 января 2021 г.
- Авторы: Piskarev I.M., Ivanova I.P.
- Журнал: Plasma Chemistry and Plasma Processing
- Том: 41
- Номер: 1
- Год издания: 2021
- Издательство: Kluwer Academic/Plenum Publishers
- Местоположение издательства: United States
- Первая страница: 447
- Последняя страница: 475
- DOI: 10.1007/s11090-020-10127-6
- Аннотация: AbstractThe yield of redox reactions (Fe2+ oxidation and Mn7+ reduction in aqueous solutions)under the action of hot plasma radiation in liquid and species formed in the region ofplasma discharge was measured. The goal of the investigation is to evaluate the role ofhot plasma radiation as active factor compared to species generating in discharge itself.As source of active species we studied the spark discharge in air and in nitrogen (SD50generator), the generator of corona discharge in air and low-pressure mercury UV lamp(λ=253.7 nm). The yield of redox reactions for all sources was determined using detectingliquids; the mechanisms of these reactions were analysed. It was shown that chain reactions do not take place. When the yields were calculated, the stoichiometry of the reactions was taken into account. An analysis of the results shows that under the action of aspark discharge generator SD50, the main active factor is radiation. The role of active species formed in discharge region not more than 15%. Under the action of a spark dischargeradiation, active species frst form in the sample being processed, and then interact withsubstances dissolved in water. There is an indirect mechanism of action. Owing of thispeculiarity, the redox properties of water, activated by hot plasma radiation, are the sameas direct treatment of samples to hot plasma radiation. For a corona discharge plasma andradiation from a mercury lamp, such a mechanism does not occur.Keywords Spark discharge plasma radiation · Corona discharge plasma · UV lamp
- Добавил в систему: Пискарев Игорь Михайлович