Chitosan Biopolymer and Its Nanocomposites: Emerging Material as Adsorbent in Wastewater Treatment

Table 1

Various chitosan nanocomposite data for removal of metal ions.

Nanocomposite	Metal ion	Adsorption capacity	Isotherm model	Kinetics	Adsorption equilibrium time	References
Polyacrylic acid grafted magnetic chitosan nanocomposite	Pb (II)	204.89 mg/g	Langmuir model	Pseudo-second-order	70 min	[59]
Chitosan-MnO2 nanocomposite	Cr (VI)	61.56 mg g1	Langmuir model	Intra diffusion model	120 min	[60]
Modified chitosan cinnamaldehyde nanocomposite	Cr (VI)	61.35 mg/g	Langmuir model	Pseudo-second-order	35 min	[61]
NTiO2-chitosan@NZrO2-chitosan nanocomposite	Sm (III)	650 μg/mol	Langmuir-freundlich	Pseudo-first-order	30 min	[62]
Triethylenetetramine-modified hollow Fe3O4/SiO2/chitosan magnetic nanocomposites	Cr (VI)	254.6 mg	Langmuir	Pseudo-second-order	15 min	[63]
Chitosan-boehmite desiccant composite	Pb (II), Cd (II), Hg (II)	—	Langmuir	Pseudo-second-order	—	[64]
Chitosan modified molybdenum disulfide composites	Eu (III)	0.86 mmol/g	Langmuir	—	240 min	[65]
Magnetite modified chitosan cinnamaldehyde nanocomposite	Cr (VI)	58.14 mg/g	Langmuir model	Pseudo-second-order	80 min	[61]
Nacre-inspired hydroxyapatite/chitosan layered composites	Pb (II), Cd (II), Hg (II)	—	Elovich	Pseudo-first and second-order	6 days	[22]
Goethite/graphene oxide/chitosan nanocomposite	As (III)	289.42 mg/g	Freundlich and sips models	Pseudo-second-order	3000 min	[51]
NTiO2-chitosan@NZrO2-chitosan nanocomposite	Gd (III)	450 μg/mol	Langmuir-Freundlich	Pseudo-first-order	20 min	[62]
Chitosan modified molybdenum disulfide composites	Cr (IV)	3.04 mmol/g	Langmuir	—	180 min	[65]
Melamine grafted chitosan-montmorillonite nanocomposite	Fe^3+	125.79 mg/g	Freundlich	Pseudo-second-order	120 min	[66]
Chitosan modified molybdenum disulfide composites	U (VI)	0.71 mmol/g	Langmuir		120 min	[65]