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Photo-remediation of Phenanthrene Contaminated Soil under Visible Light Irradiation
Paper Type  |
Contributed Paper |
Title |
Photo-remediation of Phenanthrene Contaminated Soil under Visible Light Irradiation |
Author |
Chonlada Dechakiatkrai Theerakarunwong*[a], and Sukon Phanichphant[b] |
Email |
chonlada.dechakiatkrai@gmail.com |
|
Abstract: The photocatalytic degradation of phenanthrene-contaminated soil over Fe-doped TiO2 under visible light irradiation was investigated. The influence of physicochemical parameters such as catalyst dosage, dopant doping and soil pH was studied. The optimum amount of 3 at. wt%Fe doped TiO2 (1%) expressed high photocatalytic activity of 83.45% under visible irradiation with alkaline conditions within 2 h. The Fe dopant significantly enhanced phenanthrene photocatalytic degradation by the strong oxidizing radical OH· and complex [Fe3+-ligand] could generated by the Photo-Fenton-Like catalyst reaction. A possible mechanism of phenanthrene degradation was proposed based on GC/MS elucidation. In the presence of Fe dopant, phenanthrene was degraded to heptadecane. Based on the quantification analysis, the presence of TiO2 catalysts for degradation of phenanthrene in the soil sample could reduce the concentration of phenanthrene from 60 mg kg-1 to 20 mg kg-1 within 2 hours, while in the control soil without catalyst, the concentration of phenanthrene could only be reduced from 60 mg kg-1 to 40 mg kg-1 in equal time.
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Start & End Page |
845 - 850 |
Received Date |
2014-04-14 |
Revised Date |
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Accepted Date |
2014-12-13 |
Full Text |
Download |
Keyword |
photocatalytic, Fe doped titanium dioxide, GC-MS |
Volume |
Vol.43 No.4 (JULY 2016) |
DOI |
|
Citation |
Theerakarunwong*[a] C.D., and Phanichphant[b] S., Photo-remediation of Phenanthrene Contaminated Soil under Visible Light Irradiation, Chiang Mai Journal of Science, 2016; 43(4): 845-850. |
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