Simulation of reactive processes related to biodegradation in aquifers 2. model application to a column study on organic carbon degradation

摘要

The reactive transport model TBC(Transport, Biochemistry, and Chemistry)was applied to a laboratory column study on microbial organic carbon degradation by von Gunten and Zobrist [von Gunten, U., Zobrist, J., 1993. Biogechemical changes in groundwater-infiltration systems: Column studies, Geochim. Cosmochim. Acta, 57(1993)3895-3906]. Five microbial groups were Considered in the model: facultatively aerobic bacteria of denitrifiers, fermenters, and sulfate-, Manganese-, and iron-reducers. By simulating their growth subsequent consumption of organic Carbon and electron acceptors, and production of metabolic products, it was possible to reproduce The observed transient concentration changes of the reactive species.