Novel embedded ceramic electrode system to activate nanostructured titanium dioxide for degradation of MTBE

Chulhan Kim, E. Sahle-Demessie, Pratim Biswas

Research output: Contribution to journalConference articlepeer-review

Abstract

A novel reactor combining a flame-deposited nanostructured titanium dioxide film and a set of embedded ceramic electrodes was designed, developed, and tested for degradation of MTBE in water. On applying a voltage to the ceramic electrodes, a surface corona was generated which provided sufficient light to activate the nanostructured TiO 2 film. Air passed above the ceramic electrodes could be ozonized and bubbled through the reactor to enhance MTBE degradation. The concentration of ozone formed was controlled by adjusting the applied voltage and supplying either pure oxygen or air. While the reactor could be operated in continuous mode, all kinetic runs were made in a batch mode without a pH buffer. The results showed typical first-order decay: with an initial MTBE concentration of 10 mg/L, 98% of MTBE was degraded within 3 hr. The concentrations of the intermediate by-products increased until 1.5-2 hr, after which they decreased and were completely converted to CO 2. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA 8/22-26/2004).

Original languageEnglish (US)
Pages (from-to)ENVR-27
JournalACS National Meeting Book of Abstracts
Volume228
Issue number1
StatePublished - 2004
Externally publishedYes
EventAbstracts of Papers - 228th ACS National Meeting - Philadelphia, PA, United States
Duration: Aug 22 2004Aug 26 2004

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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