Photocatalytic Degradation of Tri- and Tetrachloroethylene on Porous TiO₂ Pellets

• YAMAZAKI Suzuko

  Department of Chemistry, Faculty of Science, Yamaguchi University

• ARAKI Kensuke

  Department of Chemistry, Faculty of Science, Yamaguchi University

Bibliographic Information

Other Title

• Photocatalytic Degradation of Tri-and Tetrachloroethylene on Porous TiO2 Pellets

Abstract

The photo-assisted catalytic degradations of trichloroethylene (TCE) and tetrachloroethylene (PCE) were studied in a tubular photoreactor packed with TiO₂ pellets prepared by sol-gel method. The experiments were performed at 32°C in a non-circulating mode. Comparison with the ethylene degradation reveals that TCE and PCE were degraded more efficiently than ethylene. However, only 48% of TCE or 57% of PCE was converted to HCl and CO₂ whereas 95% of ethylene was mineralized. Phosgene, CHCl₃ and dichloroacetic acid were detected from the photodegradation of TCE while that of PCE yielded phosgene, CCl₄ and trichlroacetic acid. Phosgene in the effluent gas stream was completely removed by passing through water. The reaction mechanism to form these chlorinated products is discussed.

Journal

• Electrochemistry

  Electrochemistry 70 (6), 412-415, 2002-06-05

  The Electrochemical Society of Japan

Keywords

• Trichloroethylene
• Tetrachloroethylene
• Photocatalyst
• Sol-gel Method

Details

• CRID: 1390845702278425216
• NII Article ID: 10008573425
• NII Book ID: AN00151637
• DOI: 10.5796/electrochemistry.70.412
• ISSN: 21862451
• ISSN: 13443542
• NDL BIB ID: 6179856
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6179856
• Web Site: https://www.jstage.jst.go.jp/article/electrochemistry/70/6/70_412/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Allowed