Farkas Luca; Kréz Zsófia; Alapi Tünde: Effect of inorganic ions on the vacuum-uv photolysis of water.
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Absztrakt (kivonat)
Vacuum-ultraviolet (VUV) photolysis is based on high-energy radiation ( < 200 nm) where photons are absorbed by water and produce highly reactive species; primarily HO• and H• , and in smaller quantities eaq . VUV photolysis, due to the radicals formed, can efficiently transform and mineralize organic contaminants without any other additives. In this work, the effect of different inorganic ions (Cl– , NO3 ,HCO3 ), present in large amounts in wastewater, was investigated in the case of two different types of VUV light sources. The conventionally used low-pressure mercury-vapor lamp emits both 254 nm UV and 185 nm VUV photons and is widely used in water treatment for disinfection (254 nm) and producing high purity water (254/185 nm). The other applied light source was the Xe excimer lamp, used mainly in the laboratory scale, emits quasi-monochromatic 172 nm VUV light. The effect of inorganic ions during VUV photolysis depends on the radical scavenging capacity, molar absorbance of ions, and the properties of the radicals and radical ions formed from them by VUV or UV photolysis (for UV/VUV185nm), which is well reflected by the results presented.
| Mű típusa: | Konferencia vagy workshop anyag |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Proceedings of the International Symposium on Analytical and Environmental Problems |
| Dátum: | 2021 |
| Kötet: | 27 |
| ISBN: | 978-963-306-835-9 |
| Oldalak: | pp. 119-123 |
| Nyelv: | angol |
| Kiadó: | University of Szeged |
| Kiadás helye: | Szeged |
| Konferencia neve: | International Symposium on Analytical and Environmental Problems (27.) (2021) (Szeged) |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/75798/ |
| Kulcsszavak: | Szervetlen kémia, Analitikai kémia |
| Megjegyzések: | Bibliogr.: 123. p. ; ill. ; összefoglalás angol nyelven |
| Szakterület: | 01. Természettudományok 01. Természettudományok > 01.04. Kémiai tudományok |
| Feltöltés dátuma: | 2022. máj. 30. 10:41 |
| Utolsó módosítás: | 2022. aug. 08. 15:40 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/75940 |
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