Browse > Article

Characteristics of Ti-SPAC as Fluidizing Phase Photocatalyst  

Lee, Joon-Jae (Center for Chemical Process & Engineering, Korea Research Institute of Chemical Technology)
Suh, Jeong-Kwon (Center for Chemical Process & Engineering, Korea Research Institute of Chemical Technology)
Hong, Ji-Sook (Center for Chemical Process & Engineering, Korea Research Institute of Chemical Technology)
Park, Jin-Won (Department of Chemical Engineering, Yonsei University)
Lee, Jung-Min (Center for Chemical Process & Engineering, Korea Research Institute of Chemical Technology)
Publication Information
Korean Chemical Engineering Research / v.44, no.4, 2006 , pp. 375-381 More about this Journal
Abstract
In this sturdy, spherical activated carbon(SPAC) contained $TiO_2$ was made by ion-exchanged treatment and heat treatment for applying fluidizing bed system. The ion-exchange resin was treated by $TiCl_3$ aqueous solution. The treated resin and raw resin were heat-treated under nitrogen condition to convert into Ti-SPAC. During the heat-treatment, burn-off weight amounts and the element were measured by means of TGA and TGA/MS, individually. The physicochemical properties of Ti-SPAC was characterized by means of XRD, SEM, EDS, BET, EPMA, ESR, intensity and titanium content. The Ti-SPAC had spherical shape with diameter size about $350{\mu}m{\sim}400{\mu}m$ and $617m^2/g$ specific surface area. Structure of $TiO_2$ in Ti-SPAC was anatase and rutile form. Also, $TiO_2$ on SPAC were found that the $TiO_2$ were uniformly distributed through EPMA analysis. Moreover, the Ti-SPAC showed indirect photocatalyst activity estimation through ESR analysis, characteristics of photocatalyst potentially. Over all results, Ti-SPAC was used in fluidizing bed UV/photocatalyst system to remove HA(Humic Acid). That results were HA removal efficiency was about 70％ and Ti-SPAC intensity was preserved during reaction. Ti-SPAC showed practical possibility as photocatalyst in fluidizing bed system.
Keywords
Spherical Activated Carbon; Ion-exchange Resin; Titanium; Photocatalyst; Fluidizing Bed;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Lee, S. W. and Lee, K., 'Mass Transfer Effect on the Photocatalytic Activity of UV.$TiO_2$ Packed-bed System,' J. ind. Eng. Chem., 10(3), 492-498(2004)
2 Louise, E. B. and Mary, D., 'The Evaluation of Colour in Natural Waters,' Water. Res., 27(7), 1209-1218(1993)   DOI   ScienceOn
3 Wu, C., Yue, Y., Deong, X., Hua, W. and Gao, Z., 'Investigation on the Sinergetic Between Anatase and Rutile Nanoparticle in Gas-phase Photocatalytic Oxidations,' Catalysis Today, 93, 863-869(2004)   DOI   ScienceOn
4 Singer, P. C. 'Humic Substance as Precursors for Potentially Harmful Disinfection by-products,' Water Sci. Thechnol., 40(9), 25-30(1999)
5 Ministry of Environmental(Korea), data base of water quality
6 McCarthy, J. F., 'Bioavailability and Toxicity of Metals and Hydrophobic Organic Contaminants. In Aquatic Humic Substances: Influence on Fate and Treatment of Pollutants,' American Chemical Society, Washington. DC 263-279(1989)
7 Wang, G. S., Liao, C. H. and Wu, F. J., 'Photodegradation of Humic Acid in the Presence of Hydrogen Peroxide,' Chemosphere, 42, 379-387(2001)   DOI   ScienceOn
8 Torimoto, T., Ito, S., Kuwabata, S. and Yoneyama, H., 'Effects of Adsorbents Used as Supports for Titanium Dioxide Loading on Photocatalytic Degradation of Propyzamide,' Environ. Sci. Tech., 30, 1275-1281(1996)   DOI   ScienceOn
9 Banwell, C. N. and McCash, E. M., Fundamentals of molecular spectroscopy. McGRAW-HILL BOOK COMPANY., 254-257(1994)
10 Hermann, J.-M., 'Heterogeneous Photocatalysis: An Emerging Discipline Involving Multiphase System,' Catalysis Today, 24, 157-163(1995)   DOI   ScienceOn
11 Niyaz, M. M., Molhtar, A., Nargess, Y. L. and Nooshin, S. T., 'Kinetics of Heterogenous Photocatalytic Degradation of Reactive Dyes in an Immobilized $TiO_2$ Photocatalytic Rector,' J. Colloid and Interface Science, 295, 159-164(2006)   DOI   ScienceOn
12 Yoneyama, H. and Torimoto, T., 'Titanium Dioxide/adsorbent Hybrid Photocatalysts for Photodestruction of Organic Substances of Dilute Concentrations,' Catalysis Today, 58, 133-140(2000)   DOI   ScienceOn
13 Kim, T. H., Lee, M. N., Lee, S. H., Park, Y. C., Jung, C. K. and Boo, J. H., 'Development of Surface Coating Technology of $TiO_2$ Powder and Improvement of Photocatalytic Activity by Surface Modification,' Tim Solid Films., 475, 171-177(2005)   DOI   ScienceOn
14 Turchi, C. S. and Ollis, D. F., 'Photocatalystic Reactor Design: An Example of Mass-transfer Limitation with Immobilized Catalyst,' J. Phys. Chem, 92(23), 6852-6853(1988)   DOI