Surface Water Microbial Community Response to the Biocide 2,2-Dibromo-3-Nitrilopropionamide, Used in Unconventional Oil and Gas Extraction

• Maria Fernanda Campa ^[3] ; Stephen M. Techtmann ^[1] ; Mallory P. Ladd ^[4] ; Jun Yan ^[5] ; Megan Patterson ^[6] ; Amanda Garcia de Matos Amaral ^[6] ; Kimberly E. Carter ^[7] ; Nikea Ulrich ^[2] ; Christopher J. Grant ^[2] ; Robert L. Hettich ^[4] ; Regina Lamendella ^[2]
  1. [1] Michigan Technological University

     Michigan Technological University

     City of Houghton, Estados Unidos

     
  2. [2] Juniata College

     Juniata College

     Borough of Huntingdon, Estados Unidos

     
  3. [3] a Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee, USA; b Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
  4. [4] a Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee, USA; d Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
  5. [5] e Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, People’s Republic of China; f Department of Microbiology, University of Tennessee, Knoxville, Tennessee, USA
  6. [6] f Department of Microbiology, University of Tennessee, Knoxville, Tennessee, USA
  7. [7] g Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, Tennessee, USA

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• Localización: Applied and Environmental Microbiology, ISSN 0099-2240, Vol. 85, Nº 21, 2019
• Idioma: inglés
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  • Unconventional oil and gas activity can affect pH, total organic carbon, and microbial communities in surface water, altering their ability to respond to new environmental and/or anthropogenic perturbations. These findings demonstrate that 2,2-dibromo-3-nitrilopropionamide (DBNPA), a common hydraulic fracturing (HF) biocide, affects microbial communities differently as a consequence of past HF exposure, persisting longer in HF-impacted (HF+) waters. These findings also demonstrate that DBNPA has low efficacy in environmental microbial communities regardless of HF impact. These findings are of interest, as understanding microbial responses is key for formulating remediation strategies in unconventional oil and gas (UOG)-impacted environments. Moreover, some DBNPA degradation by-products are even more toxic and recalcitrant than DBNPA itself, and this work identifies novel brominated degradation by-products formed.