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Title: The functional potential of microbial communities in hydraulic fracturing source water and produced water from natural gas extraction characterized by metagenomic sequencing

Journal Article · · PLoS ONE
 [1];  [2];  [2];  [3];  [1];  [4]
  1. National Energy Technology Lab., Pittsburgh, PA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
  2. National Energy Technology Lab., Pittsburgh, PA (United States); Univ. of Pittsburgh, Pittsburgh, PA (United States)
  3. National Energy Technology Lab., Pittsburgh, PA (United States)
  4. Agriculture and Agri-Food Canada (Canada)

Microbial activity in produced water from hydraulic fracturing operations can lead to undesired environmental impacts and increase gas production costs. However, the metabolic profile of these microbial communities is not well understood. Here, for the first time, we present results from a shotgun metagenome of microbial communities in both hydraulic fracturing source water and wastewater produced by hydraulic fracturing. Taxonomic analyses showed an increase in anaerobic/facultative anaerobic classes related to Clostridia, Gammaproteobacteria, Bacteroidia and Epsilonproteobacteria in produced water as compared to predominantly aerobic Alphaproteobacteria in the fracturing source water. Thus, the metabolic profile revealed a relative increase in genes responsible for carbohydrate metabolism, respiration, sporulation and dormancy, iron acquisition and metabolism, stress response and sulfur metabolism in the produced water samples. These results suggest that microbial communities in produced water have an increased genetic ability to handle stress, which has significant implications for produced water management, such as disinfection.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
OSTI ID:
1168804
Report Number(s):
NETL-PUB-1113
Journal Information:
PLoS ONE, Vol. 9, Issue 10; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

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Cited By (10)

Oil and Gas Produced Water, High‐Salinity Brines, and Associated Cost Modeling book January 2019
Anaerobic Biodegradation of Hydrocarbons: Metagenomics and Metabolomics book January 2016
Metatranscriptome analysis of active microbial communities in produced water samples from the Marcellus Shale journal July 2016
Microbial metabolisms in a 2.5-km-deep ecosystem created by hydraulic fracturing in shales journal September 2016
Coupled laboratory and field investigations resolve microbial interactions that underpin persistence in hydraulically fractured shales journal June 2018
Microbial communities in Bakken region produced water journal April 2018
Draft Genome Sequences of Marinobacter Strains Recovered from Utica Shale-Produced Fluids journal April 2018
Metabolic Capability of a Predominant Halanaerobium sp. in Hydraulically Fractured Gas Wells and Its Implication in Pipeline Corrosion journal June 2016
Anaerobic Biodegradation of Hydrocarbons: Metagenomics and Metabolomics book January 2019
Unconventional Oil and Gas Energy Systems: An Unidentified Hotspot of Antimicrobial Resistance? journal October 2019