Research Article
Statistical Modeling and Kinetic Studies on the Adsorption of Reactive Red 2 by a Low-Cost Adsorbent: Grape Waste-Based Activated Carbon Using Sulfuric Acid Activator-Assisted Thermal Activation
Figure 4
3D response surface and 2D contour plots show the effect of pH and contact time on the RR2 removal.
(a) |
(b) |