Evaluation of UV LEDs Performance in Photochemical Oxidation of Phenol in the Presence of
Publication: Journal of Environmental Engineering
Volume 136, Issue 3
Abstract
A novel application of ultraviolet (UV) light emitting diodes (LEDs) as a light source for the degradation of organic contaminant has been investigated. Photocleaving of hydrogen peroxide via UV LEDs photolysis resulted in the generation of hydroxyl radicals. It was found that phenol removal was insignificant in the absence of hydrogen peroxide, therefore oxidation of phenol was attributed to the formed radicals. Two criteria were selected to provide detailed information on the performance of UV LEDs in phenol oxidation: (1) the reaction quantum efficiency and (2) the energy consumption. Statistical tools such as the response surface methodology and the ANOVA were applied to estimate the influence of various process parameters such as the wavelength (255, 269, and 276 nm) and to phenol molar ratio (5, 50, and 100) on phenol degradation reaction quantum efficiency. The decay of phenol (initial concentration of 1.06 mM) was the most pronounced at 255 nm and to phenol molar ratio of 50. Finally, the “figure-of-merit” was used to estimate the specific energy consumption of the UV LED-based process.
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Acknowledgments
Sari Vilhunen and Ekaterina V. Rokhina contributed equally to this paper. Financial support from Finnish Environmental Science and Technology graduate school (EnSTe), E.U., and the city of Mikkeli are gratefully acknowledged. Dr. J. Puton is thanked for the photochemical calculations.
References
Alnaizy, R., and Akgerman, A. (2000). “Advanced oxidation of phenolic compounds.” Adv. Environ. Res., 4(3), 233–244.
Bolton, J. R., Bircher, K. G., Tumas, W., and Tolman, C. A. (2001). “Figures-of-merit for the technical development and application of advanced oxidation technologies for both electric- and solar-driven systems.” Pure Appl. Chem., 73(4), 627–637.
Chiou, C. -H., Wu, C. -Y., and Juang, R. -S. (2008). “Photocatalytic degradation of phenol and m-nitrophenol using irradiated in aqueous solutions.” Sep. Purif. Technol., 62(3), 559–564.
Crawford, A. H., Banas, M. A., Ross, M. P., Ruby, D. S., Nelson, J. S., Boucher, R., and Allerman, A. A., and (2005). Final LDRD Report: Ultraviolet Water Purification Systems for Rural Environments and Mobile Applications, A. H. Crawford et al., eds., 37.
De, A. K., Chaudhuri, B., Bhattacharjee, S., and Dutta, B. K. (1999). “Estimation of OH radical reaction rate constants for phenol and chlorinated phenols using UV/H2O2 photo-oxidation.” J. Hazard. Mater., 64(1), 91–104.
Garcia Einschlag, F. S., et al. (2002). “Evaluation of the efficiency of photodegradation of nitroaromatics applying the technique.” Environ. Sci. Technol., 36, 3936–3944.
Han, W., Zhu, W., Zhang, P., Zhang, Y., and Li, L. (2004). “Photocatalytic degradation of phenols in aqueous solution under irradiation of 254 and 185 nm UV light.” Catal. Today, 90(3–4), 319–324.
Hu, X., et al. (2006). “Deep ultraviolet light-emitting diodes.” Phys. Status Solidi, 203(7), 1815–1818.
Khan, M. A. (2006). “AlGaN multiple quantum well based deep UV LEDs and their applications.” Phys. Status Solidi, 203(7), 1764–1770.
Kuhn, H. J., Braslavsky, S. E., and Schmidt, R. (2004). “Chemical actinometry (IUPAC technical report).” Pure Appl. Chem., 76(12), 2105–2146.
Kusic, H., Koprivanac, N., Bozic, A. L., and Selanec, I. (2006). “Photo-assisted Fenton type processes for the degradation of phenol: A kinetic study.” J. Hazard. Mater., 136(3), 632–644.
Lapkin, A. A., Boddu, V. M., Aliev, G. N., Goller, B., Polisski, S., and Kovalev, D. (2008). “Photo-oxidation by singlet oxygen generated on nanoporous silicon in a LED-powered reactor.” Chem. Eng. J., 136, 331–336.
Li, J. M., Meng, X. G., Hu, C. W., and Du, J. (2009). “Adsorption of phenol, p-chlorophenol and p-nitrophenol onto functional chitosan.” Bioresour. Technol., 100(3), 1168–1173.
Mayer, R. H., and Montgomery, D. C. (2002). Response surface methodology, Wiley, New York.
Nakamura, S. (1997). “InGaN quantum-well structure blue LEDs and Lds.” J. Lumin., 72–74, 55–58.
Ohno, Y., and Zong, Y. (1999). “Detector-based integrating sphere photomety.” Proc., 24th Session of the CIE, Vol. 1, Part 1, Warsaw, Poland 155–160.
Poulopoulos, S. G., Arvanitakis, F., and Philippopoulos, C. J. (2006). “Photochemical treatment of phenol aqueous solutions using ultraviolet radiation and hydrogen peroxide.” J. Hazard. Mater., 129(1–3), 64–68.
Rana-Madaria, P., Nagarajan, M., Rajagopal, C., and Garg, B. S. (2005). “Removal of chromium from aqueous solutions by treatment with carbon aerogel electrodes using response surface methodology.” Ind. Eng. Chem. Res., 44(17), 6549–6559.
Rokhina, E. V., Sillanpää, M., Nolte, M. C. M., and Virkutyte, J. (2008). “Optimization of pulp mill effluent treatment with catalytic adsorbent using orthogonal second-order (Box-Behnken) experimental design.” J. Environ. Monit., 10(11), 1304–1312.
Shie, J. -L., Lee, C. -H., Chiou, C. -S., Chang, C. -T., Chang, C. -C., and Chang, C. -Y. (2008). “Photodegradation kinetics of formaldehyde using light sources of UVA, UVC and UVLED in the presence of composed silver titanium oxide photocatalyst.” J. Hazard. Mater., 155, 164–172.
Taniyasu, Y., Kasu, M., and Makimoto, T. (2006). “An aluminum nitride light-emitting diode with a wavelength of 210 nm.” Nature, 441, 325–328.
Tschudi, T. (2008). Die Bedeutung der UV-Optik in unserer Gesellschaft, Anwendungspotenziale von UV LEDs Optence Workshop, Erich-Schott-Zentrum Mainz, Germany.
U.S. EPA. (1984). Method 604, Phenols, Part VIII, 40 CFR Part 136, Environmental Protection Agency, Washington, D.C.
Vázquez, G., González-Álvarez, J., García, A. I., Freire, M. S., and Antorrena, G. (2007). “Adsorption of phenol on formaldehyde-pretreated Pinus pinaster bark: Equilibrium and kinetics.” Bioresour. Technol., 98(8), 1535–1540.
Vilhunen, S. H., and Sillanpää, M. E. T. (2009). “Ultraviolet light emitting diodes and hydrogen peroxide in the photodegradation of aqueous phenol.” J. Hazard. Mater., 161(2–3), 1530–1534.
Wagner, J., Ramakrishnan, A., Obloh, H., Kunzer, M., Köhler, K., and Johs, B. (1999). “Spectroscopic ellipsometry analysis of InGaN/GaN and AlGaN/GaN heterostructures using a parametric dielectric function model.” Proc., Fall Meeting, Symp. W: GaN and Related Alloys, Materials Research Society, Boston.
Wang, W. -Y., and Ku, Y. (2006). “Photocatalytic degradation of Reactive Red 22 in aqueous solution by UV-LED radiation.” Water Res., 40(12), 2249–2258.
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Published In
Journal of Environmental Engineering
Volume 136 • Issue 3 • March 2010
Pages: 274 - 280
Copyright
© 2010 ASCE.
History
Received: Jan 19, 2009
Accepted: Aug 25, 2009
Published online: Aug 26, 2009
Published in print: Mar 2010
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