Fig. 7From: Adsorption of Cr(VI) onto cross-linked chitosan-almond shell biochars: equilibrium, kinetic, and thermodynamic studiesEffect of adsorbent dosage on Cr(VI) adsorption; a for ASC400, b for Ch-ASC400, c for ASC500, d for Ch-ASC500 (adsorption conditions: initial Cr(VI) concentration: 55 mg L−1; contact time: 120 min; pH: 1.5; temperature: 25 °C)Back to article page