The Surface Chemistry of Iron Metal in Environmental Remediation Applications
EMSL Project ID
2399
Abstract
This collaboration began during my sabbatical at EMSL during the period of 10/00-06/01. The overall goal was to determine how the surface morphology of iron metal affects its reactivity with aqueous oxidants, especially chlorinated solvents like carbon tetrachloride. The approach is to characterize samples of iron metal, prepared in my laboratory at OGI, using the methods available in the Interfacial Chemistry group at EMSL. The primary contact for the work has been Dan Gaspar.A great deal of research has been done over the last 5-10 years on the reactivity of iron with environmental contaminants such as carbon tetrachloride due to the potential application of iron in technologies for in situ remediation of contaminated groundwater. However, almost all of this work has been based on the kinetics and products observed in batch reactors. Most of this work has assumed that the reaction is occuring as uniform corrosion of the surface, eventhough the possibility for reaction localized at defects on the surface is well known.The project will characterize sames of iron after exposure to carbon tetrachloride using SIMS, XPS, Auger, etc. to try to determine whether reductive dechlorination of the contaminants is occuring uniformly on the passive film or locally in pits, crevices, etc.
Project Details
Project type
Exploratory Research
Start Date
2001-12-04
End Date
2003-12-09
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
1 S.K.Gangwal, Velu Subramani, and David A Green. Evaluation of a Long-Term Fischer-Tropsch Test and the Resulting Spent Iron Catalyst. AIChE Spring Meeting, April 23, 2007, Houston, Texas, USA
D. R. Heine, M. K. Petersen, and G. S. Grest, "Effect of particle shape and charge on bulk rheology of nanoparticle suspensions", Journal of Chemical Physics, Volume 132, Issue 18, 2010, Article number 184509. doi.org/10.1063/1.3419071
Liang B, JC Lehmann, D Solomon, S Sohi, JE Thies, JO Skjemstad, FJ Luizao, MH Engelhard, S Wirick, and EG Neves. 2008. "Stability of Biomass-derived Black Carbon in Soils ." Geochimica et Cosmochimica Acta 72(24):6069-6078. doi:10.1016/j.gca.2008.09.028
Nguyen BT, JC Lehmann, J Kinyangi, R Smernik, and MH Engelhard. 2008. "Long-term Black Carbon Dynamics in Cultivated Soil." Biogeochemistry 89(3):295-308. doi:10.1007/s10533-008-9220-9