Peter L. O'Brien, Thomas M. DeSutter, Francis X. M. Casey, Abbey Wick, Zachary J. Bartsch, S. J. Croat, Samantha Struffert

Oil spill soil remediation using thermal desorption: Project synthesis and outcomes

  • Plant Science
  • Soil Science
  • Agricultural and Biological Sciences (miscellaneous)
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AbstractFarmland within the Williston Basin of North Dakota was the site of the largest terrestrial oil spill to date in the United States in 2013. Over 3200 m3 of oil was released into the topsoil and subsoil, creating a risk to soil, water, and air resources. The purpose of this document is to provide a summary of results from a 7‐year project investigating the impacts of how thermal desorption (TD), the method used to remediate topsoil and subsoil, impacted contaminant reduction, soil function, and plant productivity simultaneously with site remediation. Soil disturbance and TD decreased soil organic matter and microbial communities, resulting in decreased soil function and plant production. However, TD did not reduce soil microbial recovery 4 years after treatment. Blending TD‐treated soil with uncontaminated topsoil appeared to minimize these negative effects and promote recovery of soil function. These findings provided critical information to stakeholders in the understanding of soil remediation and reclamation in this region.

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