Integration of Omics into a New Comprehensive Rate Law for Competitive Terminal Electron-Accepting Processes in Reactive Transport Models: Application to N, Fe, S, and Contaminant Transformations in Stream and Wetland Sediments
EMSL Project ID
50513
Abstract
We recently received notification that our DOE-BER proposal (ID: 0000231737, Program Manager: Paul Bayer) was funded to define a new comprehensive rate law for metabolic processes in freshwater sediments that drive the transformation of carbon, nutrients, and contaminants (e.g., Hg, U). The newly developed rate laws will consider enzymatic processes and their thermodynamic driving force based on the environmental conditions. In addition, these rate laws will depict the competition between enzymatic processes and predict the rate of reduction of nitrate, Fe(III) oxides, and sulfate regardless of the geochemical conditions at a particular site and their temporal evolution. In this manner, the new comprehensive rate law will incorporate cryptic terminal electron-accepting processes that may otherwise be hidden in the bulk geochemical signals (e.g., identical rates of sulfide oxidation and sulfate reduction). Thus, the specific aim of the present FY2019 EMSL General Cycle Proposal is to produce complementary metaproteomic and metabolomic data (EMSL component) that will be combined with metagenomic and meta-transcriptomic data (Georgia Tech component) to generate a new comprehensive rate law for reactive transport models.
Project Details
Project type
Exploratory Research
Start Date
2018-10-21
End Date
2019-11-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members