In situ assessment of microbial sulfate reduction in a petroleum-contaminated aquifer using push-pull tests and stable sulfur isotope analyses

摘要

Anaerobic microbial activities such as sulfate reduction are important of the degradation of petroleum hydrocarbons(PHC)in contaminated aquifers. The objective of this study was to evaluate the feasibility of single-well push-pull tests in combination with stable sulfur isotope analyses for the in situ quantification of microbial sulfate reduction. A series of push-pull tests was performed in an existing monitoring well of a PHC-contaminated aquifer in Studen(Switzer- land). Sulfate transport behavior was evaluated in a first test.