Figure 7
From: One-step synthesis of nitrogen-grafted copper-gallic acid for enhanced methylene blue removal

(a) Effect of adsorbent dosage on %removal of MB, at C0 = 70 ppm. (b) Effect of salinity on the adsorption of MB onto Ng-CuGA at a different salt concentration (Na2CO3 = 20 ppm, NaCl = 300 ppm, and their combination).