Evaluation of performance with small and scale-up rotating and flat reactors; photocatalytic degradation of bisphenol A, 17Β–estradiol, and 17Α–ethynyl estradiol under solar irradiation

Saewon Kim, Hyekyung Cho, Hyunku Joo, Namguk Her, Jonghun Han, Kwangbok Yi, Jong Oh Kim, Jaekyung Yoon

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In this study, the performances of photocatalytic reactors of the small and scale-up rotating and flat types were evaluated to investigate the treatment of new emerging contaminants such as bisphenol A (BPA), 17α-ethynyl estradiol (EE2), and 17β-estradiol (E2) that are known as endocrine disrupting compounds (EDCs). In the laboratory tests with the small-scale rotating and flat reactors, the degradation efficiencies of the mixed EDCs were significantly influenced by the change of the hydraulic retention time (HRT). In particular, considering the effective two-dimensional reaction area with light and nanotubular TiO2 (NTT) on a Ti substrate, the rotating reactors showed the more effective performance than the flat reactor because the degradation efficiencies are similar in the small effective area. In addition, the major parameters affecting the photocatalytic activities of the NTT were evaluated for the rotating reactors according to the effects of single and mixed EDCs, the initial concentrations of the EDCs, the UV intensity, and dissolved oxygen. In the extended outdoor tests with the scale-up photocatalytic reactors and NTT, it was confirmed from the four representative demonstrations that an excellent rotating-reactor performance is consistently shown in terms of the degradation of the target pollutants under solar irradiation.

Original languageEnglish
Pages (from-to)21-32
Number of pages12
JournalJournal of Hazardous Materials
Volume336
DOIs
StatePublished - 2017 Jan 1

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Ethinyl Estradiol
Estradiol
irradiation
Irradiation
Oxygen
Light
Degradation
Dissolved oxygen
Demonstrations
Hydraulics
Impurities
Substrates
pollutant
bisphenol A
evaluation
reactor
dissolved oxygen
hydraulics
substrate

Keywords

  • Endocrine disrupting compounds (EDCs)
  • Flat photocatalytic reactor
  • Rotating photocatalytic reactor
  • Solar irradiation
  • TiO nanotubes
  • Water treatment

Cite this

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title = "Evaluation of performance with small and scale-up rotating and flat reactors; photocatalytic degradation of bisphenol A, 17Β–estradiol, and 17Α–ethynyl estradiol under solar irradiation",
abstract = "In this study, the performances of photocatalytic reactors of the small and scale-up rotating and flat types were evaluated to investigate the treatment of new emerging contaminants such as bisphenol A (BPA), 17α-ethynyl estradiol (EE2), and 17β-estradiol (E2) that are known as endocrine disrupting compounds (EDCs). In the laboratory tests with the small-scale rotating and flat reactors, the degradation efficiencies of the mixed EDCs were significantly influenced by the change of the hydraulic retention time (HRT). In particular, considering the effective two-dimensional reaction area with light and nanotubular TiO2 (NTT) on a Ti substrate, the rotating reactors showed the more effective performance than the flat reactor because the degradation efficiencies are similar in the small effective area. In addition, the major parameters affecting the photocatalytic activities of the NTT were evaluated for the rotating reactors according to the effects of single and mixed EDCs, the initial concentrations of the EDCs, the UV intensity, and dissolved oxygen. In the extended outdoor tests with the scale-up photocatalytic reactors and NTT, it was confirmed from the four representative demonstrations that an excellent rotating-reactor performance is consistently shown in terms of the degradation of the target pollutants under solar irradiation.",
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Evaluation of performance with small and scale-up rotating and flat reactors; photocatalytic degradation of bisphenol A, 17Β–estradiol, and 17Α–ethynyl estradiol under solar irradiation. / Kim, Saewon; Cho, Hyekyung; Joo, Hyunku; Her, Namguk; Han, Jonghun; Yi, Kwangbok; Kim, Jong Oh; Yoon, Jaekyung.

In: Journal of Hazardous Materials, Vol. 336, 01.01.2017, p. 21-32.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Evaluation of performance with small and scale-up rotating and flat reactors; photocatalytic degradation of bisphenol A, 17Β–estradiol, and 17Α–ethynyl estradiol under solar irradiation

AU - Kim, Saewon

AU - Cho, Hyekyung

AU - Joo, Hyunku

AU - Her, Namguk

AU - Han, Jonghun

AU - Yi, Kwangbok

AU - Kim, Jong Oh

AU - Yoon, Jaekyung

PY - 2017/1/1

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N2 - In this study, the performances of photocatalytic reactors of the small and scale-up rotating and flat types were evaluated to investigate the treatment of new emerging contaminants such as bisphenol A (BPA), 17α-ethynyl estradiol (EE2), and 17β-estradiol (E2) that are known as endocrine disrupting compounds (EDCs). In the laboratory tests with the small-scale rotating and flat reactors, the degradation efficiencies of the mixed EDCs were significantly influenced by the change of the hydraulic retention time (HRT). In particular, considering the effective two-dimensional reaction area with light and nanotubular TiO2 (NTT) on a Ti substrate, the rotating reactors showed the more effective performance than the flat reactor because the degradation efficiencies are similar in the small effective area. In addition, the major parameters affecting the photocatalytic activities of the NTT were evaluated for the rotating reactors according to the effects of single and mixed EDCs, the initial concentrations of the EDCs, the UV intensity, and dissolved oxygen. In the extended outdoor tests with the scale-up photocatalytic reactors and NTT, it was confirmed from the four representative demonstrations that an excellent rotating-reactor performance is consistently shown in terms of the degradation of the target pollutants under solar irradiation.

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