U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Search Result

Liu, C., X. Chen, E. E. Mack, S. Wang, W. Du, Y. Yin, S.A. Banwart, and H. Guo.
Journal of Hazardous Materials 368:444-451(2019)

Two permeable reactive barrier (PRB) columns that relied on microbes' self-domestication mechanisms were designed and used to remediate simulated PAH-impacted groundwater. The carbon source for A was based on wheat straw, and B was based on coconut shell biochar. Results showed that both A and B removed almost 100% of phenanthrene. More carbon was released from A (80-500 mg/L) than from B (72-195 mg/L), and slightly more oxygen was released from B (7.31-10.31 mg/L) than A (7.15-9.64 mg/L). The release of organic carbon from material B was more stable. The bacterial communities of both columns comprised members of the Mycobacterium, Pseudomonas, and Sphingomonas genera that are known to degrade phenanthrene, and Pseudomonas and Sphingomonas were seven times more abundant in column B than in column A. Results indicated that material B is more promising for treating PAH-contaminated groundwater.

The Technology Innovation News Survey welcomes your comments and suggestions, as well as information about errors for correction. Please contact Michael Adam of the U.S. EPA Office of Superfund Remediation and Technology Innovation at or (703) 603-9915 with any comments, suggestions, or corrections.

Mention of non-EPA documents, presentations, or papers does not constitute a U.S. EPA endorsement of their contents, only an acknowledgment that they exist and may be relevant to the Technology Innovation News Survey audience.