Search Result
Technology Innovation News Survey Feed (RSS)
PERFORMANCE OF A NEW ACTIVATED CARBON AMENDMENT FOR BIOREMEDIATING PETROLEUM-IMPACTED SITES
Thoreson, K., P. Erickson, B. Hicks A. Punsoni, S. Sittler, D. Taggart, and K. Clark.
RemTech 2019: Remediation Technologies Symposium, 16-18 October, Banff, 33 slides, 2019
PetroFix® Remediation Fluid was field-tested on a contaminated plume downgradient of a former bulk petroleum storage facility in South Bend, IN. Historical remedial efforts included LNAPL recovery and air sparging/soil vapor extraction, but relatively high concentrations of petroleum hydrocarbons remained in the groundwater. PetroFix was injected by low-pressure direct-push methods in an area surrounding a single monitoring well with >50 ppm total petroleum hydrocarbons in the diesel and gasoline range combined. Groundwater samples were monitored at baseline and at regular intervals post-application for standard chemical and geochemical parameters, as well as by QuantArray® Petro for quantification of the bacterial communities. Baseline microbial analysis indicated a moderate presence of both aerobic and anaerobic petroleum degraders. At one and three months post-injection, contaminant concentrations fell >90%. At three months, RNA analysis showed Methylibium petroleiphilum, a known BTEX degrader, replicating robustly. Another line of evidence for biodegradation was the rapid reduction of NO3- followed by a more gradual loss of SO42-. Dissolved methane initially dipped, before climbing to over twice the pre-application concentration, which is consistent with increased hydrocarbon biodegradation, despite the dramatic removal of contamination from the dissolved phase. Slides: https://www.esaa.org/wp-content/uploads/2019/10/19-Punsoni.pdf-Petro-Fix-2019-05-16-05.pdf
RemTech 2019: Remediation Technologies Symposium, 16-18 October, Banff, 33 slides, 2019
PetroFix® Remediation Fluid was field-tested on a contaminated plume downgradient of a former bulk petroleum storage facility in South Bend, IN. Historical remedial efforts included LNAPL recovery and air sparging/soil vapor extraction, but relatively high concentrations of petroleum hydrocarbons remained in the groundwater. PetroFix was injected by low-pressure direct-push methods in an area surrounding a single monitoring well with >50 ppm total petroleum hydrocarbons in the diesel and gasoline range combined. Groundwater samples were monitored at baseline and at regular intervals post-application for standard chemical and geochemical parameters, as well as by QuantArray® Petro for quantification of the bacterial communities. Baseline microbial analysis indicated a moderate presence of both aerobic and anaerobic petroleum degraders. At one and three months post-injection, contaminant concentrations fell >90%. At three months, RNA analysis showed Methylibium petroleiphilum, a known BTEX degrader, replicating robustly. Another line of evidence for biodegradation was the rapid reduction of NO3- followed by a more gradual loss of SO42-. Dissolved methane initially dipped, before climbing to over twice the pre-application concentration, which is consistent with increased hydrocarbon biodegradation, despite the dramatic removal of contamination from the dissolved phase. Slides: https://www.esaa.org/wp-content/uploads/2019/10/19-Punsoni.pdf
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 adam.michael@epa.gov 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.
