Loading...
Please wait, while we are loading the content...
Similar Documents
Degradation Efficiency and Kinetics Analysis of an Advanced Oxidation Process Utilizing Ozone, Hydrogen Peroxide and Persulfate to Degrade the Dye Rhodamine B
| Content Provider | MDPI |
|---|---|
| Author | Zawadzki, Piotr Deska, Małgorzata |
| Copyright Year | 2021 |
| Description | In this study, the effectiveness of a rhodamine B (RhB) dye degradation process at a concentration of 20 mg/L in different advanced oxidation $processes—H_{2}O_{2}$/UV, $O_{3}$/UV and PDS/UV—has been studied. The use of UV in a photo-assisted ozonation process $(O_{3}$/UV) proved to be the most effective method of RhB decolorization (90% after 30 min at dye concentration of 100 mg/L). The addition of sulfate radical precursors (sodium persulfate, PDS) to the reaction environment did not give satisfactory effects (17% after 30 min), compared to the PDS/UV system (70% after 30 min). No rhodamine B decolorization was observed using hydrogen peroxide as a sole reagent, whereas an effect on the degree of RhB degradation was observed when UV rays strike the sample with $H_{2}O_{2}$ (33% after 30 min). The rhodamine B degradation process followed the pseudo-first-order kinetics model. The combined $PDS/O_{3}$/UV process has shown 60% color removal after 30 min of reaction time at an initial dye concentration of 100 mg/L. A similar effectiveness was obtained by only applying ozone or UV-activated persulfate, but at a concentration 2–5 times lower (20 mg/L). The results indicated that the combined $PDS/O_{3}$/UV process is a promising method for high RhB concentrations (50–100 mg/L) comparing to other alternative advanced oxidation processes. |
| Starting Page | 974 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal11080974 |
| Journal | Catalysts |
| Issue Number | 8 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-08-14 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Water Science and Technology Rhodamine B Dye Advanced Oxidation Process Radicals Kinetics |
| Content Type | Text |
| Resource Type | Article |
