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Issue
Korean Journal of Chemical Engineering,
Vol.20, No.5, 862-868, 2003
Removal of Paraquat in Aqueous Suspension of TiO2 in an Immersed UV Photoreactor
Lee JC, Kim MS, Kim CK, Chung CH, Cho SM, Han GY, Yoon KJ, Kim BW
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
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[Cited By]
  1. Na YS, Kim DH, Lee CH, Lee SW, Park YS, Oh YK, Park SH, Song SK, Korean Journal of Chemical Engineering, 21(2), 430, 2004
  2. Kim YO, Nam HU, Park YR, Lee JH, Park TJ, Lee TH, Korean Journal of Chemical Engineering, 21(4), 801, 2004
  3. Na YS, Lee CH, Lee TK, Lee SW, Park YS, Oh YK, Park SH, Song SK, Korean Journal of Chemical Engineering, 22(2), 246, 2005
  4. Lee MH, Kim SB, Son SM, Cheon JK, Korean Journal of Chemical Engineering, 23(2), 309, 2006
  5. Park JY, Lee IH, Korean Journal of Chemical Engineering, 26(2), 387, 2009
  6. Jafarzadeh NK, Sharifnia S, Hosseini SN, Rahimpour F, Korean Journal of Chemical Engineering, 28(2), 531, 2011
  7. Artkla S, Korean Journal of Chemical Engineering, 29(5), 555, 2012
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