Deducing the distribution of terminal electron-accepting processes (TEAPs) in hydrologically
diverse groundwater systems
Chappelle et al. (1995)Water Resources Research, Vol 31, No. 2
Introduction
•The Importance•The Problem•The Alternative
I TEAPs It Real
• The Basics• Water chem can determine TEAPs by
1. Tracking electron acceptor consumption2. Tracking final product accumulation3. Tracking intermediate product concentrations
• Previous studies fail to TEAPs it real• Hydrogen (H2) concentrations an important
intermediate product indicator of TEAPs
PURPOSE OF
THEPAPER
Hierarchical Framework for Identifying TEAPs
STUDYSITES
Black Creek Aquifer, South Carolina
Black Creek Aquifer, South Carolina
Floridan Aquifer - Baldosta, Georgia
Floridan Aquifer - Baldosta, Georgia
Alluvial-Lacustrine Aquifers – San Joaquin Valley
Alluvial-Lacustrine AquifersSan Joaquin Valley
Petroleum Hydrocarbon-Contaminated Aquifer: Hanahan, South Carolina
Petroleum Hydrocarbon- Contaminated Aquifer:
Hanahan, South Carolina
CONCLUSIONS
• The main, important observation is that H2 concentration ranges for different TEAPs are consistent between the diverse hydrologic systems studied
• H2 Concentrations are a useful indicator for TEAPs and increase confidence when used in conjunction with electron acceptor consumption and final product production.
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