fig5
Figure 5. (A) The removal rate of CBC-800 for different initial concentrations; (B) the adsorption cycles of CBC-800 for low concentration of PFOA; (C) PFOA desorption by different desorption solutions and (D) correlation coefficient between the physical properties of biochars and the maximum adsorption capacity (Qm). CBC: Corn stalks-modified biochars; PFOA: perfluorooctanoic acid.