Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reaction
The photochemical oxidation of a series of short-chain polychlorinated n-alkane (PCA) mixtures was investigated using H2O2/UV and modified photo-Fenton conditions (Fe3+/H2O2/UV) in both Milli-Q and lake water. All PCA mixtures, including chlorinated (Cl5 to Cl8) decanes, undecanes, dodecanes and tri...
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| Language: | English |
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Wiley
2004-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/S1110662X04000121 |
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| author | Ken J. Friesen Taha M. El-Morsi Alaa S. Abd-El-Aziz |
| author_facet | Ken J. Friesen Taha M. El-Morsi Alaa S. Abd-El-Aziz |
| author_sort | Ken J. Friesen |
| collection | DOAJ |
| description | The photochemical oxidation of a series of short-chain polychlorinated n-alkane (PCA) mixtures
was investigated using H2O2/UV and modified photo-Fenton conditions (Fe3+/H2O2/UV) in both Milli-Q and lake water. All PCA mixtures, including chlorinated (Cl5 to Cl8) decanes, undecanes, dodecanes and
tridecanes degraded in 0.02 M H2O2/UV at pH 2.8 in pure water, with 80±4% disappearance after 3 h of irradiation using a 300 nm light source. Degradation was somewhat enhanced under similar conditions but
in natural water. The modified photo-Fenton system was more effective in degrading PCAs, with 72% and 80%
disappearance of chlorinated decanes in 45 min of irradiation in pure and natural water, respectively. Carbon
chain-length had minimal effect on degradation rates; however, increased degree of chlorination (from Cl5 to Cl8) resulted in slower initial degradation rates and less complete conversion after 3 h of irradiation. Three
hours of irradiation in natural water/H2O2/UV resulted in 95% degradation of parent PCAs accompanied by
93% release of chloride ion. Quantitative dechlorination, which may be indicative of complete mineralization,
suggests that this is an effective water remediation technique for PCAs. |
| format | Article |
| id | doaj-art-65afbe3ed7154724aed80ef67ba1b7a7 |
| institution | Kabale University |
| issn | 1110-662X |
| language | English |
| publishDate | 2004-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-65afbe3ed7154724aed80ef67ba1b7a72025-02-03T05:59:49ZengWileyInternational Journal of Photoenergy1110-662X2004-01-0162818810.1155/S1110662X04000121Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reactionKen J. Friesen0Taha M. El-Morsi1Alaa S. Abd-El-Aziz2Department of Chemistry, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba R3B 2E9, CanadaDepartment of Chemistry, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba R3B 2E9, CanadaDepartment of Chemistry, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba R3B 2E9, CanadaThe photochemical oxidation of a series of short-chain polychlorinated n-alkane (PCA) mixtures was investigated using H2O2/UV and modified photo-Fenton conditions (Fe3+/H2O2/UV) in both Milli-Q and lake water. All PCA mixtures, including chlorinated (Cl5 to Cl8) decanes, undecanes, dodecanes and tridecanes degraded in 0.02 M H2O2/UV at pH 2.8 in pure water, with 80±4% disappearance after 3 h of irradiation using a 300 nm light source. Degradation was somewhat enhanced under similar conditions but in natural water. The modified photo-Fenton system was more effective in degrading PCAs, with 72% and 80% disappearance of chlorinated decanes in 45 min of irradiation in pure and natural water, respectively. Carbon chain-length had minimal effect on degradation rates; however, increased degree of chlorination (from Cl5 to Cl8) resulted in slower initial degradation rates and less complete conversion after 3 h of irradiation. Three hours of irradiation in natural water/H2O2/UV resulted in 95% degradation of parent PCAs accompanied by 93% release of chloride ion. Quantitative dechlorination, which may be indicative of complete mineralization, suggests that this is an effective water remediation technique for PCAs.http://dx.doi.org/10.1155/S1110662X04000121 |
| spellingShingle | Ken J. Friesen Taha M. El-Morsi Alaa S. Abd-El-Aziz Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reaction International Journal of Photoenergy |
| title | Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reaction |
| title_full | Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reaction |
| title_fullStr | Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reaction |
| title_full_unstemmed | Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reaction |
| title_short | Photochemical oxidation of short-chain polychlorinated n-alkane mixtures using H2O2/UV and the photo-Fenton reaction |
| title_sort | photochemical oxidation of short chain polychlorinated n alkane mixtures using h2o2 uv and the photo fenton reaction |
| url | http://dx.doi.org/10.1155/S1110662X04000121 |
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