Fig. 5From: Three-dimensional hierarchical porous carbon derived from natural resources for highly efficient treatment of polluted waterKinetic curves of a the pseudo-second-order kinetic model, b PC-500-Y for the adsorption of MB. (Experimental conditions: MB concentration was 250Â mg/L for PC-500-2, 300Â mg/L for PC-500-4 and PC-500-6 and adsorbent concentration was 20Â mg/L.)Back to article page