Does incineration turn infectious waste aseptic?

K. Kanemitsu, K. Inden, H. Kunishima, K. Ueno, M. Hatta, Y. Gunji, I. Watanabe, M. Kaku

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Incineration of infectious waste is considered to be biologically safe. We performed basic experiments to confirm that bacillus spores are killed by incineration in a muffle furnace. Biological samples containing 106 spores of Bacillus stearothermophilus were placed in stainless steel Petri dishes and then into hot furnaces. The furnace temperature and duration of incineration were 300 °C for 15 min, 300 °C for 30 min, 500 °C for 15 min, 500 °C for 30 min and 1100 °C for 3 min. We confirmed that all spores of B. stearothermophilus were killed at each of these settings. The effect of incineration seems to be equivalent to that of sterilization, based on the satisfactory sterilization assurance level of 10-6.

Original languageEnglish
Pages (from-to)304-306
Number of pages3
JournalJournal of Hospital Infection
Issue number4
Publication statusPublished - 2005 Aug


  • Bacillus stearothermophilus
  • Infectious waste
  • Muffle furnace
  • Spore

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases


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