Photocatalytic membrane reactors comparison of the applicability of UV-C and UV-A excitations = Fotokatalitikus membránreaktorok : UV-C és UV-A fénnyel történő gerjesztések alkalmazhatóságának összehasonlítása /
In the present study photocatalytic membranes were prepared and applied in water purification. Titanium dioxide was immobilized onto polyactrilonitrile ultrafilter membrane (by physical deposition method), and the photocatalytic purification efficiencies were compared in case of different contaminat...
Saved in:
| Main Authors: | |
|---|---|
| Corporate Author: | |
| Format: | Book part |
| Published: |
2017
|
| Series: | Proceedings of the International Symposium on Analytical and Environmental Problems
23 |
| Kulcsszavak: | Fotokatalízis, Membránok |
| Online Access: | http://acta.bibl.u-szeged.hu/56264 |
| Summary: | In the present study photocatalytic membranes were prepared and applied in water purification. Titanium dioxide was immobilized onto polyactrilonitrile ultrafilter membrane (by physical deposition method), and the photocatalytic purification efficiencies were compared in case of different contaminations, using two different types of UV light sources (to excite the catalyst) with different emission spectra (intensity maximums were at 254 nm and at 365 nm). As model contaminants dissolved organic compounds (dyes like Acid Red 1 and Rhodamine B), dispersed crude oil, and bacterial contamination (E.coli) were applied. In case of oil contaminated water, the COD value and the extractable oil content were measured, in case of dye contaminated waters the concentrations were measured by a spectrophotometer, meanwhile in case of E.coli infected water, the colony forming unit was determined by counting the growing colonies (on agar gel) from a given volume of the samples. On one hand, UV-C irradiation was preferable in the aspect of disinfection, and therefore UV-C irradiation can be more efficient in the suppression of biofilm formation on membrane surfaces. On the other hand, UV-A irradiation was more effective in the decomposition of either water soluble and dispersed organic contaminants. |
|---|---|
| Physical Description: | 528-533 |
| ISBN: | 978-963-306-563-1 |