연속흐름식 반응기를 이용한 모노 - , 디 - 트리 클로로페놀의 광촉매반응에 관한 연구 = Photocatalytic Degradation of Mono - , Di , Tri - chorophenols using continuous Flow Reactor

다국어 초록 (Multilingual Abstract)

The Electron/Hole Pair is generated when the Activation Energy produces by Ultraviolet Ray illumination to the Semiconductor. And OH- ion produces by Water Photo-Cleavage reacts with Positive Hole. As a result, OH Radical acting as strong oxidant is generated and then Photocatalytic Oxidation Reaction occurs.
The Photocatalytic Oxidation can oxidize the chlorophenol to Chloride and Carbon Dioxide easier, safer and shorter than conventional Water Treatment Process With the same degree of chlorination, the Cl- ion at para (C4) position is most easily replaced by the OH radical. And then, the blocking effect of OH^- ion between the Cl- ions and CL^- ions at symmetrical location is easily replaced by the OH radical.
For mono-, di-, tri-chlorophenols, there is no obvious difference in decomposition rate, decomposition efficiency and completeness of the decomposition reaction except for 2,3-dichloropheno, 2,4,5-, 2,3,4-trichlorophenol. The decomposition efficiency is higher than 75% and completeness of the decomposition reaction is higher than 70%.
Therefore, continuous flow photocatalytic reactor is promising process to remove the chlorinated aromatic compounds which is more toxic than non-chlorinated aromatic compound.