Comparative effects of TiO2-immobilized photocatalytic supporters on the bactericidal efficiency of a novel photoreactor

Jung Kon Kim, Hack Sun Choi, Eungbin Kim, Young Sang Lee, Yong Ho Kim, Si Wouk Kim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A novel and highly effective UV-TiO2 photocatalytic reactor was developed for killing microorganisms, including Escherichia coli. Among tested four types of TiO2-immobilized photocatalytic supporters (glass bead, muscovite bead, alginate bead, and TiO2 thin film coated quartz tube), the muscovite bead had a 99.9% percent bactericidal activity within 5 min along with permanent longevity. Adding air bubbles or H2O2 (<50 mg 1-1) to the sample solution significantly enhanced the killing activity in that 100% percent of bacterial cells were killed within 3 min.

Original languageEnglish
Pages (from-to)1397-1400
Number of pages4
JournalBiotechnology Letters
Issue number17
Publication statusPublished - 2002 Sep

Bibliographical note

Funding Information:
This work was supported by the special grants research program from Ministry of Agriculture (Project No. 299023-3) (2001), and ERC grant from Ministry of Science and Technology and KOSEF (2001) in Korea.

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology


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