Research Article

Well-Dispersed Nanoscale Zero-Valent Iron Supported in Macroporous Silica Foams: Synthesis, Characterization, and Performance in Cr(VI) Removal

Figure 7

(a) Cr(VI) adsorption isotherms of Mx-NZVI composites; (b) adsorption kinetics of Mx-NZVI composites. (c) Adsorption kinetics of Mc-NZVI with different dosage. (d) Adsorption kinetics of Mc-NZVI at different initial pH. (e) Cr(VI) uptake of Mc-NZVI as a function of pH. (f) The effect of coexisting cations on Cr(VI) adsorption capacity of Mc-NZVI. The initial Cr(VI) concentration is 15 mg⋅L−1.