Fig. 3From: Comparative study of Cr(VI) removal by bio-waste adsorbents: equilibrium, kinetics, and thermodynamicEffect of contact time on adsorption of Cr(VI) by BP, RSS, and CKS (adsorption conditions: concentration of Cr(VI), 50 ppm; pH 2; adsorbent dosage, 10 g/L; temperature, 25 ± 1 °C; λ = 540 nm)Back to article page