Figure 4

The well fitted adsorption models (A) Langmuir and (B) Second -order for the Cr(VI) adsorption. The side shows the linear forms of the models (The error bars represent the standard error of mean).

The well fitted adsorption models (A) Langmuir and (B) Second -order for the Cr(VI) adsorption. The side shows the linear forms of the models (The error bars represent the standard error of mean).