Fig. 8
From: Enhanced adsorption of phenol using EDTA-4Na- and KOH-modified almond shell biochar
Effect of initial phenol concentration on phenol adsorption by A-BC. Experimental conditions: dosage of A-BC, 1.0 g L−1; initial phenol concentration, 10–1000 mg L−1; initial pH of solution unadjusted; contact time, 240 min; solution volume, 20 mL, temperature, 25 °C