Feasibility Study of UV Activated Persulfate Oxidation of Phenol
| Autor: | Chun-Hua Chen, 陳俊華 |
|---|---|
| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 UV activated persulfate can produce highly reactive sulfate free radicals (SO4-․). At alkaline condition, SO4-․can react with hydroxyl ions and undergo radical interconversion to form hydroxyl radicals (OH․). This study investigated feasibility of 254 nm UV activated persulfate oxidation of phenol and focused on effects of pH and persulfate/phenol molar ratios on the degradation of phenol. The results of this study show that un-activated persulfate was not able to effectively degrade phenol within an hour. However, UV can efficiently activate persulfate to produce SO4-․ in degrading phenol. When initial phenol concentration was 0.5 mM, 99% of phenol degradation and 63% of mineralization were achieved within an hour of oxidation reaction while 3% of persulfate was decomposed. Moreover, the results obtained from the oxidation reaction under different pHs exhibited effects of pH conditions on phenol degradations were minor. However, initial phenol and persulfate concentrations significantly influenced the phenol degradation. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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