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A method for controlling hydrogen sulfide in water by adding solid phase oxygen.

Yu-Jie Chang1, Yi-Tang Chang, Hsi-Jien Chen

  • 1Department of Safety Health and Environmental Engineering, Tung-Nan Institute of Technology, ShenKeng, Taipei County 22202, Taiwan, ROC. yjchang@mail.tnit.edu.tw

Bioresource Technology
|January 28, 2006
PubMed
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Magnesium peroxide (ORC) effectively inhibits hydrogen sulfide (H2S) production by sulfate-reducing bacteria (SRB) for over 40 days. This offers a long-term solution compared to hydrogen peroxide, which provides only short-term H2S control.

Area of Science:

  • Environmental microbiology
  • Water treatment technologies
  • Chemical remediation

Background:

  • Sulfate-reducing bacteria (SRB) are significant contributors to hydrogen sulfide (H2S) production in aquatic environments.
  • Hydrogen sulfide poses environmental and operational challenges, necessitating effective control strategies.

Purpose of the Study:

  • To evaluate the efficacy of solid-phase oxygen (magnesium peroxide, ORC) in inhibiting H2S production by SRB.
  • To compare the long-term performance of ORC with traditional hydrogen peroxide (H2O2) for H2S control.

Main Methods:

  • Developed a novel method to determine the initial oxygen release rate of ORC using sodium sulfite.
  • Conducted bench-scale column tests with cultured SRB to assess H2S inhibition.
  • Performed batch tests to determine optimal ORC dosage for H2S mitigation.

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Main Results:

  • A 0.4% dosage of ORC demonstrated sustained inhibition of H2S formation for over 40 days.
  • In contrast, 0.1% hydrogen peroxide provided only a four-day reduction in H2S levels.
  • ORC effectively suppressed the SRB population, leading to long-term H2S control.

Conclusions:

  • Solid-phase oxygen (ORC) is a viable and effective alternative for long-term control of H2S production in SRB-enriched environments.
  • ORC offers superior sustained inhibition compared to hydrogen peroxide for managing H2S in water treatment.