Impact of Biocides on Hydrogen Sulfide Production and Growth of Desulfovibrio vulgaris

Eitan Ben-Dov, Ofir Zisman, Asher Brenner, Ariel Kushmaro

Research output: Contribution to journalArticlepeer-review

Abstract

Inhibition of sulfide production by sulfate-reducing bacteria can be achieved by the use of chemical agents such as nitrite, molybdate, or copper. Herein, we tested the effect of these biocides and their combinations on the growth and production of H2S by Desulfovibrio vulgaris subsp. vulgaris. At pH 6.6, lower concentrations of biocides were required to inhibit H2S production in comparison to pH 7.8, as a consequence of higher production rates of bactericidal nitrous acid, or lower formation rates of thiomolybdate. A combination of 0.1 mM MoO4 2− and 0.25 mM NO2 at pH 7.8 was found to be synergistic, leading to an inhibition rate of 56% in H2S production and of 85% in D. vulgaris growth.

Original languageEnglish
Pages (from-to)1423-1427
Number of pages5
JournalClean - Soil, Air, Water
Volume44
Issue number10
DOIs
StatePublished - 1 Oct 2016

Keywords

  • Biocides
  • Copper
  • HS bacterial production
  • Molybdate
  • Nitrite

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Pollution

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