Characterizing the Products of Field-Scale Biostimulation: Decoupling the Mineralogical Effects of Iron- and Sulfate-Reduction
EMSL Project ID
6902b
Abstract
This user proposal is a continuation of an earlier project (EMSL 6902), which focused on the characterization of the products of stimulated sulfate-reduction under carefully controlled laboratory conditions. As a result of the success of this earlier project and the renewal of our ERSP-funded research, we are proposing to expand our EMSL-based characterization methods to include analysis of materials derived from an aquifer undergoing biostimulation via acetate-amendment. The materials will be sourced from an alluvial aquifer and will include a range of grain sizes and mineralogical types; however, an emphasis will be placed on isolating both the clay-sized fraction (<2µm) and any insoluble metal sulfides (e.g. FeS). This proposal seeks to better elucidate the nature of the microbe-mineral interactions in naturally derived field materials. In particular, we are interested in the impact that specific forms of microbial metabolism (iron- and sulfate-reduction) have on the physiochemical properties of those minerals altered by stimulated microbial activity.Project Details
Project type
Exploratory Research
Start Date
2006-10-23
End Date
2007-06-08
Status
Closed
Released Data Link
Team
Principal Investigator