Photocatalytic degradation of aqueous organic solvents in the presence of hydroxyl radical scavengers
Tetrahydrofuran (THF) and 1,4-dioxane (DIOX) are two common solvents that are found in contaminated groundwater. Photocatalytic degradation of these two organic solvents in water was studied in the presence of carbonate and bicarbonate, which are hydroxyl radical scavengers. The reactions were perfo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2001-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/S1110662X01000241 |
| Summary: | Tetrahydrofuran (THF) and 1,4-dioxane (DIOX) are two common solvents that are found in
contaminated groundwater. Photocatalytic degradation of these two organic solvents in water was studied
in the presence of carbonate and bicarbonate, which are hydroxyl radical scavengers. The reactions were
performed in an annular slurry photoreactor. It was found that bicarbonate and carbonate ions acted as
hydroxyl radical scavengers and slowed down the DIOX degradation rate but did not significantly affect
the THF degradation rate. The slight enhancement in the THF degradation rate in the presence of sodium
bicarbonate may be due to the increase in pH. In addition, it appears that bicarbonate and carbonate ions
were reduced to other organic species during the photocatalytic reaction. |
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| ISSN: | 1110-662X |