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Surface area-normalized rate constants (k SA ) of reaction between metallic nanoparticles and reducible contaminants, such as chlorinated hydrocarbons, heavy metals, and nitrate, have been reported to be dramatically increased as compared to that of commercial metallic powder. However, k SA for individual pollutants in previously published data vary by as much as 1–2 orders of magnitude...
The decline of trichloroethylene (TCE) in a metallic iron–water system results from the combination of reduction reaction and sorption onto iron surfaces. Sorption, particularly by highly impure iron, accelerates the removal of TCE from the aqueous phase, but delays the prevalence of steady-state conditions. In this case, an overly high value of reaction rate constant in the design of a treatment...
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