Fig. 6
From: Enhanced adsorption of phenol using EDTA-4Na- and KOH-modified almond shell biochar
Effect of A-BC dosage on phenol adsorption. Experimental conditions: A-BC dosage, 0.5–3.0 g L−1; initial phenol concentration, 400 mg L−1; initial pH of the solution was not adjusted; contact time, 240 min; solution volume, 20 mL; temperature, 25 °C