Fig. 8From: Adsorption of Cr(VI) onto cross-linked chitosan-almond shell biochars: equilibrium, kinetic, and thermodynamic studiesEffect of initial Cr(VI) concentration on Cr(VI) adsorption; a for ASC400, b for Ch-ASC400, c for ASC500 and d for Ch-ASC500 (adsorption conditions: adsorbent dosages: 5.0 g L−1 for ASC400 and ASC500, 1.5 g L−1 for Ch-ASC400 and Ch-ASC500; contact time: 120 min; pH: 1.5; temperature: 25 °C)Back to article page