Ethylenediamine grafted to graphene oxide@Fe3O4 for chromium(VI) decontamination: Performance, modelling, and fractional factorial design
Fig 6
(a) Half-normal probability plot; (b) Pareto chart; (c) Plots of internally standardized residuals with predicted values; (d) Identification of main effective factors and interaction factors on Cr(VI) adsorption by EDA-GO@Fe3O4: (A) pH; (B) Cr(VI) concentration; (C) Temperature; (D) Time; (E) Adsorbent dose.