Journal of Wetlands Research (한국습지학회지)
- Volume 9 Issue 1
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- Pages.99-105
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- 2007
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- 1229-6031(pISSN)
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- 2384-0056(eISSN)
A Study on Degradation of Nonylphenol Polyethoxylate Metabolites Using Uv / Photocatalytic Silicagel Treatment
- Asano, Masahiro (Faculty of Science and Technology, Ryukoku University) ;
- Kishimoto, Naoyuki (Faculty of Science and Technology, Ryukoku University) ;
- Jiku, Fumihiko (Faculty of Science and Technology, Ryukoku University) ;
- Somiya, Isao (Faculty of Science and Technology, Ryukoku University)
- Published : 2007.04.30
Abstract
Nonylphenol polyetoxylates (NPnEOs) metabolites; nonylphenol (NP), nonylphenol monoethoxylate (NP1EO), nonylphenoxyacetic acid (NPEC) (collectively referred to "NPE-c") were examined for their degradations by using of lab-scale UV/photocatalytic silicagel (ultraviolet photocatalytic degradation in the presence of silicagel coated with titanium dioxide as a catalyst) reactor. NPE-c degradations by UV/photocatalytic silicagel treatment reached approximately 85-93 % after 40 min irradiation independently of its initial concentration (between ca. 0.5 and 2.0mg/l). Any intermediates under the NPE-c degradation were not identified by GC/MS sample analysis. Degradations of NPE-c were followed pseudo first-order kinetics. Then, the effectiveness of UV/photocatalytic silicagel treatment for degradation of NPE-c was in the order of NPEC > NP > NP1EO.