Fig. 13

Pseudo-1st -order for (a) Cr(VI), (b) E122, (c) E124, Pseudo-2nd -order for (d) Cr(VI), (e) E122, (f) E124, and IPD model for (g) Cr(VI), (h) E122, (i) E124 adsorption.

Pseudo-1st -order for (a) Cr(VI), (b) E122, (c) E124, Pseudo-2nd -order for (d) Cr(VI), (e) E122, (f) E124, and IPD model for (g) Cr(VI), (h) E122, (i) E124 adsorption.