Sulfhydryl Functionalized Magnetic Chitosan as an Efficient Adsorbent for High-Performance Removal of Cd(II) from Water: Adsorption Isotherms, Kinetic, and Reusability Studies

Figure 4

Effect of (a) pH (adsorbent dose: 0.01 g; : 25 mg/L; agitation speed: 100 rpm; time: 1440 min), (b) adsorbent dose (: 298 K; : 25 mg/L; : 298 K; time: 1440 min; agitation speed: 100 rpm), (c) contact time (adsorbent dose: 0.01 g; : 25 mg/L; : 298 K; agitation speed: 100 rpm), and (d) initial Cd(II) concentration on adsorption of Cd(II) by Fe₃O₄@CS@DMSA (: 298-318 K; adsorbent dose: 0.01 g; agitation speed: 100 rpm).

(a)

(b)

(c)

(d)