Characteristic regimes for in‐situ bioremediation of aquifers by injecting water containing an electron acceptor

A one‐dimensional model is developed for simulating in‐situ bioremediation. The modeled processes are advective and dispersive transport, biotransformation and microbial growth. The biodegradation of the contaminant is limited by the supply of electron acceptor or microbial mass. We distinguish three regimes of oxygen consumption, a low oxygen consumption regime, an intermediate regime and a fast oxygen consumption regime. Parameter variation reveals the influence of the dimensionless numbers on the duration of the three regimes.

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