Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/26981
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    標題: Photocatalysis of Trimethoprim(TRI) in Water
    作者: Ho, Dang
    Vigneswaran, Saravanamuthu
    Ngo, Huu Hao
    Shon, Ho-Kyong
    Kandasamy, Jaya
    Chang, Chia-Yuan
    Chang, Jing-Song
    貢獻者: 環境工程與科學系
    關鍵字: Photocatalysis
    persistent organic pollutant (POP)
    advanced oxidation process
    trimethoprim
    TiO2
    UV light photoreactor
    日期: 2011-05
    上傳時間: 2013-10-16 09:08:37 (UTC+8)
    摘要: The advantage of the use of photocatalysts to treat persistent organic pollutants (POP) was demonstrated with the decomposition of trimethoprim (TRI), an antibiotic most frequently detected in municipal wastewaters and surface waters. In this study, the oxidation process by UV/TiO2 was employed as an alternative to advanced oxidation process (AOP) to remove residual antibiotics from water. High concentrations of TRI were used to study the efficiency of photocatalysis. Both batch and continuous photoreactors were used. The decomposition of TRI by TiO2/UV photooxidation occurred gradually over time. On the other hand, with UV irradiation alone, the reduction of TRI mineralization was relatively small. The effect of light intensity showed there was no significant impact of UV light intensity on the degradation of TRI in the range of increasing intensities studied. The simulation using first-order kinetics provided a good fit with the experimental data. In the continuous system, the feed flow rate was adjusted to maximize the percentage of mineralization of targeted compounds inside the photoreactor. A lower flow rate, i.e., higher detention time, achieved higher percentage of TRI mineralization. The results indicated that TiO2/UV irradiation was effective in removing TRI.
    關聯: Sustainable Environment Research, 21(3), pp.154-159
    显示于类别:[環境工程與科學系(所)] 期刊論文

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