Advanced SearchSearch Tips
Photocatalytic Degradation of 2,4,6-Trinitrotoluene in Wastewater Using a Thin-Film TiO2 Reactor
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Environmental Engineering Research
  • Volume 13, Issue 1,  2008, pp.28-32
  • Publisher : Korean Society of Environmental Engineering
  • DOI : 10.4491/eer.2008.13.1.028
 Title & Authors
Photocatalytic Degradation of 2,4,6-Trinitrotoluene in Wastewater Using a Thin-Film TiO2 Reactor
Shin, Gi-Bum; Kim, Yeong-Kwan;
  PDF(new window)
The photocatalytic treatment of water contaminated with 2,4,6-trinitrotoluene (TNT) was explored in bench-scale experiments in batch mode using a Pyrex tube coated with a thin film of located inside a photoreactor. The reactor was aerated by purging it with compressed air before initiating the photocatalytic reaction. The rate of TNT degradation approximated first-order kinetics. The reaction rate constant decreased as the TNT concentration increased from 25 to 100 mg/L, while the first-order kinetics could be modeled using a Langmuir adsorption isotherm. The addition of the organic reductants methanol and EDTA significantly enhanced the rate of TNT degradation, with optimum results in the presence of 20% methanol by volume. EDTA increased the rate of TNT removal by enhancing the role of the reductants./ࠀ堡ﺖ⨀愁덀态Ȁ큑⎡ĀāḀ褗덐ᢗヨ⨀塶ヨ⨀覆ヨ⨀�̀適잖⨀똂̀適잖⨀ꁙ똂
TNT; thin-film;Photoreactor;Degradation;Adsorption;Kinetics;
 Cited by
Chemosensors for detection of nitroaromatic compounds (explosives), Russian Chemical Reviews, 2014, 83, 9, 783  crossref(new windwow)
Blake, D. M., Wolfrum, E., Boulter, J., Prairie, M., Showalter, S., Rodacy, P., Leslie, P., and Stange, B., 'Photocatalytic oxidation and reduction chemistry and a new process for treatment of pink water and related contaminated water,' NREL/TP-430-21580, National Renewable Energy Laboratory, Golden, CO (1996)

Won, W. D., DiSalvo, L. H., and Ng, J., 'Toxicity and mutagenicity of 2,4,6-trinitrotoluene and its microbial metabo lites,' Appl. Environ. Microbiol., 31, 576-580 (1976)

Wujcik, W. J., Lowe, W. L., and Marks, P. J., 'Granular activated carbon pilot treatment studies for explosives removal from contaminated groundwater,' Environ. Prog., 11, 178-189 (1992) crossref(new window)

Michels, J., and Gottschalk, G., 'Inhibition of the lignin peroxidase of Phanerochaete chrysosporium by hydroxylamino- dinitrotoluene, an early intermediate in the oxidation of 2,4,6-trinitrotoluene,' Appl. Environ. Microbiol., 60, 187-194 (1994)

Nahen, M., Bahnemann, D., Dillert, R., and Fels, G., 'Photocatalytic degradation of trinitrotoluene: reductive and oxidative pathways,' J. Photochem. Photobiol. A: Chemistry, 110, 191-199 (1997) crossref(new window)

Spiker, J. K., Crawford, D. L., and Crawford, R. L., 'Influence of 2,4,6-trinitrotoluene(TNT) concentration on the degradation of TNT in explosive-contaminated soils by the white rot fungus Phanerochaete chrysosporium,' Appl. Environ. Microbiol., 58, 3199-3202 (1992)

Carey, J. H., Lawrence, J., and Tosine, H. M., 'Photodechlorination of PCB's in the presence of titanium dioxide in aqueous suspensions,' Bull. Environ. Contam. Toxicol., 16 (6), 697-701 (1976) crossref(new window)

Prairie, M. R., Evans, L. R., Stange, B. M., and Martinez, S. L., 'An investigation of $TiO_2$ photocatalysis for the treatment of water contaminated with metals and organic compounds,' Envrion. Sci. Technol., 27, 1776-1782 (1993) crossref(new window)

Schmelling, D. C., and Gray, K. A., 'Photocatalytic transformation and mineralization of 2,4,6-trinitrotoluene(TNT) in $TiO_2$ slurries,' Wat. Res., 29(12), 2651-2662 (1995) crossref(new window)

Wang, Z., and Kutal, C., 'Photocatalytic mineralization of 2,4,6-trinitrotoluene in aqueous suspensions of titanium dioxide,' Chemosphere, 30, 1125-1136 (1995) crossref(new window)

Hess, T. F., Lewis, T. A., Crawford, R. L., Katamnenti, S., Wells, J. H., and Watts, R. J., 'Combined photocatalytic and fungal treatment for the destruction of 2,4,6-trinitrotoluene (TNT),' Wat. Res., 32(5), 1481-1491 (1998) crossref(new window)

Matthews, R. W., 'Kinetics of photocatalytic oxidation of organic solutes over titanium dioxide,' J. Catalyst, 111, 264-272 (1988) crossref(new window)

Turchi, C. S., and Ollis, D. F., 'Photochemical degradation of organic water contaminants: mechanisms involving hydroxyl radical attack,' J. Catalyst, 12, 178-192 (1990)

Low, G. K. C., McEvoy, S. R., and Matthews, R. W., 'Formation of nitrate and ammonium ions in titanium dioxide mediated photocatalytic degradation of organic compounds containing nitrogen atoms,' Environ. Sci. Technol., 25(3), 460-467 (1991) crossref(new window)

Matthews, R. W., 'Photooxidation of organic impurities in water using thin films of titanium dioxide,' J. Phys. Chem., 91, 3328-3333 (1987) crossref(new window)

Matthews, R. W., and McEvoy, S. R., 'Photocatalytic degradation of phenol in the presence of near-UV illuminated titanium dioxide,' J. Photochem. Photobiol. A: Chemistry, 64(2), 231-246 (1992) crossref(new window)

Kim, D. H., Anderson, M. A., and Zeltner, W. A., 'Effects of firing temperature on photocatalytic and photoelectrocatalytic properties of $TiO_2$,' J. Environ. Eng., 121(8), 590-594 (1995) crossref(new window)

Ha, H. Y., and Anderson, M. A., 'Photocatalytic degradation of formic acid via metal-supported titania,' J. Environ. Eng., 122(3), 217-221 (1996) crossref(new window)

Kim, D. H., and Anderson, M. A., 'Photoelectrocatalytic degradation of formic acid using a porous $TiO_2$ thin-film electrode,' Environ. Sci. Technol., 28, 479-483 (1994) crossref(new window)

Shin, G., and Kim, Y., 'Photocatalytic degradation of 2,4, 6-trinitrotoluene(TNT) in a $TiO_2$ thin film reactor,' J. Kor. Soc. Water and Wastewater, 16(2), 145-152(2002)