Study of DNAPL Dissolution Rates, Dissolution Mechanisms, Removal and Transformation Pathways
EMSL Project ID
2160
Abstract
This project is the begining of a larger area of study for us, and will answer a portion of the larger set of questions on DNAPL fate and transport in artificially heated subsurface environments. Objective The purpose of this project is to gain an understanding of the dynamic fluid-fluid-steam-air interactions resultant from heating DNAPL in soil and groundwater. It is believed that this work will develop capabilities and know-how that will spawn larger related studies in the future. 1) To measure DNAPL dissolution rate via aqueous and vapor phase transport, 2) Track chemical transformation (i.e., hydrolysis) pathways and byproducts, and 3) Quantify kinetics of these physical and chemical events. 4) Validate approach for further work in this area of study Approach To measure these parameters, the DNAPL/ groundwater environment will be simulated in a glass column. The column will be heated from the outside and power input calculated. As the environment heats, the following measurements will be taken: - Temperature of DNAPL - Temperature of Water - Temperature of insulation (for heat loss calculation) - Temperature of off gas - Contaminant concentration of initial contaminant and daughter products versus time in two locations in reactor - Off gas concentration of contaminant, byproducts - Flowrate of plenum carrier gas Instrumentation - GC/MS - Laser Induced Floresence Device
Project Details
Project type
Exploratory Research
Start Date
2001-03-01
End Date
2002-11-06
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
Zhang Q, LV Saraf, JR Smith, P Jha, and F Hua. 2009. "An Invisible Bend Sensor Based on Porous Crosslinked Polyelectrolyte Film." Sensors and Actuators. A, Physical 151(2):154-158. doi:10.1016/j.sna.2009.02.034
Zhang Q, YJ Shing, F Hua, LV Saraf, and DW Matson. 2008. "Fabrication of Transparent Capacitive Structure by Self-Assembled Thin Films." Journal of Nanoscience and Nanotechnology 8(6):3008-3012. doi:10.1166/jnn.2008.075