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Reductive kinetics of (a) NO3- removal as a function of reaction time in the presence of ZVIN and (b) a plot of ln (C0/C) versus reaction time (min). The initial concentrations of nitrate solution were 150, 200, and 250 mg l-1. The metal/solution ratio and the mean resulting R2 value were 5 g ZVIN L-1 and 0.9932, respectively.
