Alapi Tünde; Farkas Luca; Scheres Firak Daniele: Xe*-excimer lamp versus low pressure mercury vapor lamp - the comparison of the efficiency of 185 nm with 172 nm radiation, based on H202 formation and coumarin oxidation.
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Absztrakt (kivonat)
VUV photolysis is a widely used method for producing high purity water by efficiently removing organic substances present in low concentrations. This process is based on the direct photolysis of water, which results in the formation of HO and H radicals. In the case of photoinitiated Advanced Oxidation Processes (AOPs), such as VUV photolysis, the lamp type determines the effectiveness. There are two types of light sources commonly used in VUV photolysis: the low-pressure mercury vapor (LPMV) lamps and the Xe* excimer lamp. In this work, the efficiency of the low-pressure mercury vapor (LPM) lamp, which emits at 254 and 185 nm (UV/VUV185 nm lamp), and the Xe* excimer lamp, which emits at 172 nm (VUV172 nm) photons, were compared. The comparison of the efficiency of the VUV light sources was based on the formation of H2O2 in the case of the pure water as well as on the transformation of coumarin (COU) and formation of its hydroxylated product, umbelliferone (7-HO-COU).
| Mű típusa: | Konferencia vagy workshop anyag |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Proceedings of the International Symposium on Analytical and Environmental Problems |
| Dátum: | 2020 |
| Kötet: | 26 |
| ISBN: | 978-963-306-771-0 |
| Oldalak: | pp. 74-78 |
| Nyelv: | angol |
| Konferencia neve: | International Symposium on Analytical and Environmental Problems (26.) (2020) (Szeged) |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/73792/ |
| Kulcsszavak: | Kémia |
| Megjegyzések: | Bibliogr.: 78. p. ; összefoglalás angol nyelven |
| Szakterület: | 01. Természettudományok 01. Természettudományok > 01.04. Kémiai tudományok |
| Feltöltés dátuma: | 2021. nov. 16. 15:06 |
| Utolsó módosítás: | 2022. aug. 08. 15:39 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/73957 |
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