상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제30권5호
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  • Pages.501-509
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  • 2016
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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Simultaneous treatment of Cr(VI) and EDCs using flat type photocatalytic reactor under solar irradiation

  • 김세원 (한국에너지기술연구원 신재생연구본부 수소연구실) ;
  • 조혜경 (한국에너지기술연구원 신재생연구본부 수소연구실) ;
  • 주현규 (한국에너지기술연구원 신재생연구본부 수소연구실) ;
  • 허남국 (육군삼사관학교 건설환경학과) ;
  • 이광복 (충남대학교 에너지과학기술대학원) ;
  • 김종오 (한양대학교 건설환경공학과) ;
  • 윤재경 (한국에너지기술연구원 신재생연구본부 수소연구실)
  • Kim, Saewon (Korea Institute of Energy Research, New & Renewable Energy Division, Hydrogen Laboratory) ;
  • Cho, Hyekyung (Korea Institute of Energy Research, New & Renewable Energy Division, Hydrogen Laboratory) ;
  • Joo, Hyunku (Korea Institute of Energy Research, New & Renewable Energy Division, Hydrogen Laboratory) ;
  • Her, Namguk (Korea Army Academy at Young-Choen, Department of Chemistry and Environmental Science) ;
  • Yi, Kwangbok (Chungnam National University, Graduate School of Energy Science and Technology) ;
  • Kim, Jong Oh (Hanyang University, Department of Civil and Environmental Engineering) ;
  • Yoon, Jaekyung (Korea Institute of Energy Research, New & Renewable Energy Division, Hydrogen Laboratory)
  • 투고 : 2016.08.18
  • 심사 : 2016.08.26
  • 발행 : 2016.10.31
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초록

In this study, a flat-type photocatalytic reactor is applied under solar irradiation for simultaneous treatment of target pollutants: reduction of Cr(VI) to Cr(III) and oxidation of EDCs (BPA, EE2, E2). An immobilized type of photocatalyst was fabricated to have self-grown nanotubes on its surface in order to overcome limitations of powdery photocatalyst. Moreover, Ti mesh form was chosen as substrate and modified to have both larger surface area and photocatalyst content. Ti mesh was anodized at 50V and $25^{\circ}C$ for 30min in the mixed electrolytes ($NH_4F-H_2O-C_2H_6O_2$) and annealed at $450^{\circ}C$ for 2 hours in ambient oxygen to have anatase structure. Surface characterization was done with SEM and XRD methodologies. Fabricated NTT was applied to water treatment, and coexisting Cr(VI) and organics (EDCs) enhanced each other's reactions by scavenging holes and electrons and thus impeding recombination. Also, several experiments were conducted outdoor under direct sunlight and it was observed that both solar-tracking and applying modified photocatalyst were proven to enhance reaction efficiency.

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참고문헌

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