Kinetics of ultrasonic degradation of phenol in the presence of TiO 2 particles

Masaki Kubo, Kunihiro Matsuoka, Atsushi Takahashi, Naomi Shibasaki-Kitakawa, Toshikuni Yonemoto

研究成果: Article査読

115 被引用数 (Scopus)

抄録

The degradation of phenol by ultrasonic irradiation in the presence of TiO2 was investigated in complete darkness. The effects of amount of TiO2 and the combination of TiO2 addition with gas (air or oxygen) supply on the degradation kinetics of phenol and the formation of the reaction products were examined. The degradation rate of phenol increased with the amount of TiO2. As the dissolved oxygen concentration increased by supplying oxygen, the degradation rate of phenol also increased. A kinetic model for the disappearance of phenol was proposed. The model takes into account the OH radical formation by direct water degradation, indirect degradation by oxygen atom and indirect degradation by TiO2 catalysis. The calculated results explained well the fact that a higher amount of TiO 2 and dissolved oxygen concentration gave faster disappearance rate.

本文言語English
ページ(範囲)263-269
ページ数7
ジャーナルUltrasonics Sonochemistry
12
4
DOI
出版ステータスPublished - 2005 3月

ASJC Scopus subject areas

  • 化学工学(その他)
  • 環境化学
  • 放射線学、核医学およびイメージング
  • 音響学および超音波学
  • 有機化学
  • 無機化学

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