Abstract
Using monitored natural attenuation is an increasingly popular strategy for dealing with contaminated aquifers. This paper provides a statistical methodology for the estimation of the relative efficiency of natural attenuation mechanisms. The methodology provides estimates, with associated measures of uncertainty, of the relative efficiency of four types of bio-degradation (oxidation using oxygen as the electron-acceptor, denitrification, iron reduction and sulfate reduction). A data set from Trecate, Italy, is analysed using the methodology. The analysis shows that sulfate is the main cause of hydrocarbon removal on this site. It is also seen that oxidation using oxygen seems to be more preferential than the other reactions, in the sense that this reaction is relatively more efficient than other reactions at locations where the hydrocarbon concentration is low.
Original language | English (US) |
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Pages (from-to) | 339-350 |
Number of pages | 12 |
Journal | Stochastic Environmental Research and Risk Assessment |
Volume | 18 |
Issue number | 5 |
DOIs | |
State | Published - Oct 2004 |
Externally published | Yes |
Keywords
- Contaminated land
- Hydrogeology
- Likelihood inference
- Natural attenuation
- Spatial statistics
ASJC Scopus subject areas
- Environmental Engineering
- General Environmental Science
- Environmental Chemistry
- Water Science and Technology
- Statistics and Probability
- Civil and Structural Engineering