Inactivation of Legionella pneumophila by potassium permanganate

M. T. Yahya, L. K. Landeen, Charles P Gerba

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Potassium permanganate (KMnO4) was investigated for its ability to inactivate cultures of agar-grown Legionella pneumophila in a phosphate buffer (pH 6.0 and pH 8.0) at 7°C. At pH 6.0, significantly higher inactivation rates, k values, (0.300 log10 reduction min-1) of L. pneumophila were observed compared to those at pH 8.0 (0.032 log10 reduction min-1). By exposure to 5.0 mg L-1 KMnO4, more than 99% (2 log10 cfu mL-1) reduction in the bacterial numbers was achieved within 10 minutes at pH 6.0; however, at pH 8.0, at least 60 min was required for 99% reduction. KMnO4 was significantly more effective at 5.0 mg L-1 compared to 2.5 and 1.0 mg L-1. Water systems with KMnO4 may gain disinfection credits as proposed by the U.S. Environmental Protection Agency.

Original languageEnglish (US)
Pages (from-to)657-662
Number of pages6
JournalEnvironmental Technology
Volume11
Issue number7
StatePublished - 1990

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Potassium Permanganate
potassium
Disinfection
Environmental Protection Agency
agar
disinfection
Agar
Buffers
Phosphates
phosphate
Water
water

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Inactivation of Legionella pneumophila by potassium permanganate. / Yahya, M. T.; Landeen, L. K.; Gerba, Charles P.

In: Environmental Technology, Vol. 11, No. 7, 1990, p. 657-662.

Research output: Contribution to journalArticle

Yahya, M. T. ; Landeen, L. K. ; Gerba, Charles P. / Inactivation of Legionella pneumophila by potassium permanganate. In: Environmental Technology. 1990 ; Vol. 11, No. 7. pp. 657-662.
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