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

Table 3

Comparison of Cd(II) adsorption performance on Fe₃O₄@CS@DMSA nanocomposite with different adsorbents.

Adsorbent	Kinetic models	Isotherm models	qm (mg/g)	Reference
Fe3O4/chitosan-glycine-PEGDE	Pseudo-second-order	Langmuir	171.06	[61]
Polyethyleneimine-modified magnetic porous cassava	Pseudo-second-order	Langmuir	143.6	[62]
Chitosan-modified kiwi branch biochar	Pseudo-second-order	Langmuir	126.58	[63]
Sulfhydryl-modified chitosan beads	Pseudo-second-order	Langmuir	183.1	[64]
MNP-DMSA	Pseudo-first-order	Langmuir	25.44	[65]
Chitosan-pectin gel beads	Pseudo-second-order	Langmuir	177.6	[66]
Chitosan-iron oxide (CS-Fe2O3)	Pseudo-second-order	Langmuir	204.318	[67]
Thiocarbohydrazide-chitosan gel	Pseudo-second-order	Langmuir	81.26	[68]
Fe3O4@CS@DMSA	Pseudo-first-order	Langmuir	314.12	This study