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Results from laboratory experiments conducted with intact sediment pieces removed from the upstream terrace. Experiments were conducted such that 1 pore volume of fluid was pumped through the reactor series every 10 h. (a) The extent of Fe(II) oxidation achieved a pseudo-steady-state condition after 2 pore volumes of operation. (b to d) Dissolved total Fe (b), pH (c), and dissolved oxygen (DO) (d) as a function of time.
