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March 10, 2026Remediation Journal

Evaluation of 1,4‐Dioxane Natural Attenuation After In Situ Propane Biosparging: Bench‐Scale Microcosm Tests and Field Metadata Analysis

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Authors

JAJose Manual Diaz AntunesDGDevi Kumari Dhakal GaudelCBCaitlin H. Bell

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Overview

Bench-scale tests evaluate 1,4-dioxane removal in groundwater, suggesting effective long-term attenuation methods.

Key Points

  • This research aims to evaluate the effects of propane biosparging on the natural attenuation of 1,4-dioxane in groundwater.
  • Conducted bench-scale microcosm tests with groundwater from seven monitoring wells.
  • Evaluated 1,4-dioxane removal rates over 4 weeks of incubation.
  • Compiled groundwater data from over 900 monitoring wells across the U.S.
  • Significant 1,4-dioxane removal observed in microcosms from historical treatment zones.
  • First-order attenuation rates ranged from 0.02 to 1.11 day −1, with half-lives of 0.6 to 32.0 days.
  • Median half-life of 1,4-dioxane degradation post-propane biosparging was 445 days, significantly shorter than other methods.

Cite This Study

Antunes et al. (2026) studied this question.

synapsesocial.com/papers/69af95a470916d39fea4d666https://doi.org/10.1002/rem.70060
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