Utilizing the Plant Microbiome and Bioaugmentation to Degrade 1,4-Dioxane and Co-Contaminants
Abstract
1,4-Dioxane (dioxane) is a probable carcinogen and persistent groundwater pollutant often found comingled with chlorinated solvents (e.g., trichloroethylene, dichloroethylene, and trichloroethane). Because of dioxanes high mobility in groundwater, dioxane plumes tend to be large and dilute. State-issued clean-up guidelines for dioxane are on the order of 1 micro g/L or less. Reaching these low clean-up guidelines through remediation has proven to be particularly difficult and costly. Utilizing aggressive pump-and-treat and ex-situ technologies such as advanced oxidation (AO) on dilute dioxane plumes is often prohibitively expensive. During this project, we evaluated bioaugmented phytoremediation, a promising, cost-effective clean-up strategy for dioxane-contaminated groundwater. The objective of this research project was to discover microbial strains that can degrade 1,4-dioxane to health advisory levels. In addition, we evaluated the performance of candidate organisms whenbioaugmented into the poplar rhizosphere.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2021
- Accession Number
- AD1154452
Entities
People
- Jacques Mathieu
- Jerald L. Schnoor
- Mark Arnold
- Pedro J. Alvarez
- Reid A. Simmer
- Yanlin Li
Organizations
- University of Iowa