Investigation of Permanganate Release Dynamics from Silica Slurry in a Two-Dimensional Flow Cell
EMSL Project ID
48503
Abstract
The main purpose of this Rapid Access proposal is to demonstrate use of a novel subsurface emplacement technique in a two-dimensional (2-D) flow system. The technique has shown sufficient promise in nominal one-dimensional (1-D) columns but a positive application in a more complex 2-D flow field is lacking. Without such verification, there is not sufficient evidence that the method might be used in a field demonstration. Given that this 2-D evidence milestone is due by June 1, 2014, rapid access into EMSL Subsurface Flow and Transport Laboratory is requested to complete the task. The authors request the use of a small flow cell to complete two experiments, at no additional cost to the EMSL.The novel technique uses slurry consisting of silica mixed with potassium permanganate (KMnO4). The slurry has shear thinning properties, allowing for a relatively straightforward injection into the subsurface. After injection, long-term stability is provided due to the stagnant fluid’s high viscosity. During this phase, the MnO4- amendment diffuses out of the slurry into the moving groundwater to oxidize dissolved volatile organic compounds. The major advantage of this new technique is that the injected MnO4- might remain active for long periods of time compared to standard injection techniques where the amendment might be quickly removed from the subsurface with moving groundwater.
Project Details
Project type
Limited Scope
Start Date
2014-04-23
End Date
2014-06-23
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Matos De Souza M, M Oostrom, MD White, G Cardoso Da Silva, and MC Barbosa. 2016. "Simulation of Subsurface Multiphase Contaminant Extraction using a Bioslurping Well Model." Transport in Porous Media 114(3):649-673. doi:10. 1007/s11242-016-0738-3