Oxidation of Chlorinated Volatile Organic Compounds (CVOCs) in a Bubble Column Photochemical Reactor

• Alibegic Dzevo

  Department of Chemical Engineering, Waseda University, Japan

• Tsuneda Satoshi

  Department of Chemical Engineering, Waseda University, Japan

• Hirata Akira

  Department of Chemical Engineering, Waseda University, Japan

抄録

Chlorinated volatile organic compounds (CVOCs) such as chloroform (CF), carbontetrachloride (CTC), tri- and tetrachloroethylene (TCE and PCE) are pollutants commonly found in ground water and soil. Their oxidation in a novel, bubble column photochemical reactor combining the mass transfer of pollutant from the gas phase followed by a free-OH radical reaction in a liquid phase (UV/H₂O₂ system) is described mathematically and in terms of economic feasibility. It was shown that the reaction rates in liquid phase followed the pseudo-first order kinetics and the process could be therefore examined for electrical energy efficiency by the figure of merit Electrical Energy per Order (EE/O). The EE/O values were shown to depend on the initial concentration of pollutant and hydrogen peroxide, as well as the reactor radius. In all cases, the value of EE/O is decreasing with increasing reactor radius, as does the apparent rate constants of pollutant degradation. It was shown that the levels of PCE and TCE in the order of 20 mg/L could be treated economically. However, the treatment of compounds with low affinity to OH radicals was shown to be economically unfavorable even for ppb level concentrations.

収録刊行物

• アジア・太平洋化学工学会議発表論文要旨集

  アジア・太平洋化学工学会議発表論文要旨集 2004 (0), 142-142, 2004

  公益社団法人 化学工学会

キーワード

• Chlorinated Volatile Organic Compounds
• UV/H<SUB>2</SUB>O<SUB>2</SUB>
• bubble column
• electrical energy efficiency

詳細情報

• CRID: 1390282680706844672
• NII論文ID: 130005052157
• DOI: 10.11491/apcche.2004.0.142.0
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可