Browse > Article
http://dx.doi.org/10.5338/KJEA.2003.22.2.124

Determination of Operational Parameters for TCE Degradation in Photocatalytic Oxidative Reactors  

Hur, Joon-Moo (Green Engineering and Construction Co. Ltd.)
Cheon, Seung-Yul (Sung Gi Internet Co. Ltd.)
Kim, Jong-Soo (Dept. of Environ. Eng., Sun Moon University)
Publication Information
Korean Journal of Environmental Agriculture / v.22, no.2, 2003 , pp. 124-129 More about this Journal
Abstract
The objectives of this study are to manufacture an efficient $TiO_2$, photocatalyst and to delineate optimum operational parameters for TCE (trichloroethylene) degradation in a photocatalytic oxidative reactor. The $TiO_2$ photocatalyst irradiated by 365 nm UV light is expected to increase degradation of TCE in solution by a series of photocatalytic oxidations in the reactor. A new membrane $TiO_2$ photocatalyst wns eventually developed by coating a mixture of Davan-C(0.24 wt%) and PVA(0.16 wt%) on the surface of slips using the slip-casting method. Results show that increase in the number of coating of $TiO_2$ sol on surface of photocatalysts and in the surface thickness improved the endurance and photocatalysts, but these physical modifications caused significant decrease in the overall degradation efficiency of TCE. Pre-aeration or recirculation of the influents to the reactors containing TCE increased degradation efficiency of TCE. The optimum operational conditions far the surface area of photocatalysts and UV light intensity appeared to be $1.47\;mL/cm^2$ and $225\;W/cm^2{\times}100$, respectively, in the reactor. Based on the overall experimental results, the photocatalytic oxidation of TCE with the new membrane $TiO_2$ photocatalyst is found to be very effective under the operational conditions delineated in this study.
Keywords
$TiO_2$; photocatalytic oxidation; trichloroethylene;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Bruno, L., David, A. R. and Deborah, R. B. (1991) Ozone in water treatment : application and engineering, Lewis, New York
2 Suri, R. P. S. (1933) Heterogeneous photocatalytic oxidation of hazardous organic contaminants in Water, J. Water Environment Research, 65, 665-673
3 Ollis, D. F. (1985) Contaminant degradation in water, ES&T, 19, 480-484   DOI   ScienceOn
4 Childs, L. P., Matthews, R. W. and Ollis, D. F. (1980) Is photocatlaysis catalytic?, J. of Catalysis 66, 383-390   DOI   ScienceOn
5 Gerischer, H. (1933) Photoelectrochemical catalysis of the oxidation of organic molecules by oxygen on small semiconductor particles with $TiO_2$, Electrochemical Acta38, 3-9
6 Matthews, R. W. (1986) Photo-oxidation of organic material in aqueous suspensions of titanium dioxide, Wat. Res. 20(5), 569-578   DOI   ScienceOn
7 Childs, L. P. and Ollis, D. F. (1981) Photoassisted heterogeneous catalysis, J. of Catalysis 67, 35-48   DOI   ScienceOn
8 Cunningham, J. and Peter, S. (1993) Initial rates of $TiO_2$ photocatalysed degradation of water pollutions : influences of adsorption, pH and photon-flux, In Photocatalytic purification and treatment of water and air, Elsevier Science Publisher, B. V., p.82-97
9 Matthews, R. W. (1988) Kinetic of photocatalytic oxidation of organic solutes over titanium dioxide, J. of Catalysis, 111, 246-272
10 Matthews, R. W. (1993) Photocatalysis in water purification, In Photocatalytic purification and treatment of water and air, Elsevier Science Publisher, B. V., p.67-81
11 Anderson, M. A., et al. (1992) Comparison of $TiO_2$ powder suspensions and $TiO_2$ ceramic membranes supported on glass as photocatalic system in reduction of chromiurn(VI), J. of Molecular Catalysis, 71, 57-68   DOI   ScienceOn
12 Matthews, R. W. (1988) An adsorption water purification in-situ photocatalytic regeneration, J. of Catalysis, 113, 549-555   DOI   ScienceOn