Figure 4
![Effect of initial solution pH on Cr(VI) removal by M-NZVI. The M-NZVI particles have a (MCM-41):Fe0 mass ratio of 4:1. [Cr(VI)]0 = 100 mg/L, [M-NZVI]0 = 0.5 g/L, and reaction time = 60 min.](https://iwa.silverchair-cdn.com/iwa/content_public/journal/jwrd/5/2/10.2166_wrd.2014.081/3/jwrd-d-14-00081f04.png?Expires=1716514115&Signature=vpJCVNX42x0PMuRtDChurpRheAMYNmBiGlUk7bXJWFlXgvMjxKz5wFmnlZiLfq0Lj7zalS-K1cwBNqP5Axzsy260OvdxBZ0qCCgD8v6USxIYJsJuA2tDS9CT3m3kmgTUg-M7wIbMkTtx5fP~juQoZTteihQjwinH787zEu8fgrNtd3Vy4WMdmk8fkaZOb32FvZ1HDBTdj7kxEh6Eo-g-wNWWsA31gBKD2nAphfDCdUhF4TNjNOQj-5YHrukmOS8nua08DSGdXjVtDyxTGs8CiaNP8wEh91SCREqatvyqt6LFHp80oLHgVYZspABIRSb8zmCWHEi4VgdW9UuvtcAfiQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Effect of initial solution pH on Cr(VI) removal by M-NZVI. The M-NZVI particles have a (MCM-41):Fe0 mass ratio of 4:1. [Cr(VI)]0 = 100 mg/L, [M-NZVI]0 = 0.5 g/L, and reaction time = 60 min.
Effect of initial solution pH on Cr(VI) removal by M-NZVI. The M-NZVI particles have a (MCM-41):Fe0 mass ratio of 4:1. [Cr(VI)]0 = 100 mg/L, [M-NZVI]0 = 0.5 g/L, and reaction time = 60 min.