The reduction of 4-chloronitrobenzene by Fe(II)-Fe(III) oxide systems - correlations with reduction potential and inhibition by silicate

⿢The impact of silica on Fe(II)-Fe(III) oxide reduction potentials is unknown.⿢Reduction potentials determined using mediated open circuit potentiometry.⿢Reduction kinetics and measured reduction potentials generally well correlated.⿢Kinetics slower than predicted from reduction potential for Si-doped ferrihydrite.⿢Contaminant degradation in high silicate groundwaters may be less effective.