Ultraviolet light emitting diodes and hydrogen peroxide in the photodegradation of aqueous phenol
The novel system of ultraviolet (UV) light emitting diodes (LED) and hydrogen peroxide (H 2O 2) was studied for the degradation of phenol as a model organic pollutant in water. The effect of different viewing angles (15 and 120°), wavelengths (255, 265 and 280 nm) and phenol and H 2O 2 concentration...
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Published in | Journal of hazardous materials Vol. 161; no. 2; pp. 1530 - 1534 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Kidlington
Elsevier B.V
30.01.2009
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | The novel system of ultraviolet (UV) light emitting diodes (LED) and hydrogen peroxide (H
2O
2) was studied for the degradation of phenol as a model organic pollutant in water. The effect of different viewing angles (15 and 120°), wavelengths (255, 265 and 280
nm) and phenol and H
2O
2 concentrations were investigated in four photolytic batch reactors. Phenol degradation was observed to be most efficient with UV LEDs emitting at wavelength 280
nm, presumably due to the highest optical power. However, quantum yield for 280
nm reactor was only 0.23 compared to 0.33 of 255
nm reactor. Quantum yields for the rest of the reactors were 0.24 (265
nm, 120°) and 0.22 (265
nm, 15°). UV LEDs in combination with hydrogen peroxide are promising in wastewater treatment in degrading organic compounds, though development of both LEDs and reactor design is needed. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
ISSN: | 0304-3894 1873-3336 |
DOI: | 10.1016/j.jhazmat.2008.05.010 |