화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.20, No.5, 862-868, September, 2003
DOI10.1007/BF02697289  Export Citation
Removal of Paraquat in Aqueous Suspension of TiO2 in an Immersed UV Photoreactor
Joon-Chul Lee, Moon-Sun Kim1, Chul Kyung Kim2, Chan-Hwa Chung1, Sung M. Cho1, Gui Young Han1, Ki June Yoon1, and Byung-Woo Kim1, †
  • Department of Chemical Engineering, KAIST, Daejeon 305-701, Korea
  • 1Department of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Korea
  • 2Division of Chemistry & Applied Chemistry, Mokwon University, Daejeon 302-729, Korea
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Experiments were performed to investigate the effect of operating parameters on the photodegradation efficiency of paraquat in a TiO2-suspended photoreactor with immersed UV lamps. TiO2 particles were prepared by a hydrothermal method. The removal rate of paraquat in the reactor was 0.54 mg/l/h with only air-sparging. The removal rate in 24 h with both the UV radiation and air-sparging was 50% higher than that with only the UV radiation. Variations of the paraquat concentration at the UV intensities of 4 and 8W/m2 decreased slowly with time, but that at 12W/m2 decreased more rapidly. The removal efficiency at the air-sparging flow rate of 1 l/min increased as a UV light intensity increased. pH value in the reactor at the UV intensity of 12W/m2 decreased with time until 12 h and then increased with time over 12 h.
Keywords:Suspended TiO2;Photocatalyst;Paraquat;Hydrothermal Method;Immersion-Type Reactor
  1. Roukas T, Mantzouridou F, J. Chem. Technol. Biotechnol., 76(4), 371 (2001) 
  2. Braun SS, Maurette MT, Oliveros E, "Photochemical Technology," John Wiley & Sons, Inc., New York, U.S.A., 153 (1991)
  3. Chen JY, Wen CM, Chen TL, Biotechnol. Bioeng., 62(3), 311 (1999) 
  4. Cho YS, Seo KW, Korean J. Chem. Eng., 19(4), 688 (2002)
  5. Choi YS, Kim BW, J. Chem. Technol. Biotechnol., 75(12), 1145 (2000) 
  6. Davis AP, "Photocatalytic Oxidation of Organic Contaminants in Process Engineering for Pollution Control and Waste Minimization," Marcel Dekker Inc., New York, U.S.A., 377 (1994)
  7. Fernandez A, Lassaletta G, Jimenez VM, Justo A, Gonzalezelipe AR, Herrmann JM, Tahiri H, Aitichou Y, Appl. Catal. B: Environ., 7(1-2), 49 (1995) 
  8. Herrmann JM, Tahiri H, Aitichou Y, Lassaletta G, Gonzalezelipe AR, Fernandez A, Appl. Catal. B: Environ., 13(3-4), 219 (1997) 
  9. Hoffmann MR, Martin ST, Choi WY, Bahnemann DW, Chem. Rev., 95(1), 69 (1995) 
  10. Kuo WS, Lin YT, J. Environ. Sci. Health Part B-Pestic. Food Contam. Agric. Wastes, 35(1), 61 (2000)
  11. Lee JC, Kim MS, Kim BW, Water Res., 36, 1776 (2002) 
  12. Legrini O, Oliveros E, Braun AM, Chem. Rev., 93, 671 (1993) 
  13. Lindner M, Theurich J, Bahnemann DW, Water Sci. Technol., 35(4), 79 (1997) 
  14. Martyanov IN, Savinov EN, Catal. Today, 39(3), 197 (1997) 
  15. Matsunaga T, Okochi M, Environ. Sci. Technol., 29, 501 (1995)
  16. Matthews RW, Water Res., 20, 569 (1986) 
  17. Mazzarino I, Piccinini P, Spinelli L, Catal. Today, 48(1-4), 315 (1999) 
  18. Molinari R, Mungari M, Drioli E, Di Paola A, Loddo V, Palmisano L, Schiavello M, Catal. Today, 55(1-2), 71 (2000) 
  19. Neves JM, Teixeira JA, Simoes N, Mota M, Biotechnol. Bioeng., 72(3), 369 (2001) 
  20. Ollis DF, Environ. Sci. Technol., 19, 480 (1985) 
  21. Pope JD, Benner JE, J. AOAC, 57(1), 202 (1974)
  22. Pozzo RL, Baltanas MA, Cassano AE, Catal. Today, 39(3), 219 (1997) 
  23. Shiraishi F, Toyoda K, Fukinbara S, Obuchi E, Nakano K, Chem. Eng. Sci., 54(10), 1547 (1999) 
  24. Tennakone KI, Kottegoda RM, J. Photochem. Photobiol. A-Chem., 93, 79 (1996) 
  25. Valladares JE, "A New Photocatalytic Reactor for the Photodegradation of Organic Contaminants in Water," Ph.D. Thesis, Western Ontario University, Canada (1995)
  26. Wu ZL, Yuan YJ, Xing Y, Hu ZD, Chem. Eng. Technol., 23(12), 1111 (2000)