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

Table 2

Different chitosan nanocomposites for removal of harmful dyes.

Nanocomposite	Dye	Adsorption capacity	Isotherm model	Kinetics	References
Chitosan-benzil/zinc oxide/Fe3O4 nanocomposite	Remazol brilliant blue R (RBBR)	620.5 mg/g	Freundlich model	Pseudo-second-order	[77]
Chitosan polymeric nanocomposite (CS-PVA@CuO)	Acid blue 25	171.4 mg/g	Langmuir model	Pseudo-second-order	[69]
Chitosan/zero-valent nanocomposite (CS-nZVI)	Direct red 81	61.35 mg/g	Freundlich model	Pseudo-first-order	[70]
ZnO/chitosan nanocomposite	Congo red	227.3 mg/g	Langmuir model	—	[71]
Chitosan-epichlorohydrin/TiO2nanocomposite (CTS-ECH/TNC)	Reactive red 120	210 mg/g	Langmuir model	Pseudo-second-order	[72]
Chitosan-ZnO composite	Malachite green	11 mg/g	Langmuir model	Pseudo-second-order	[73]
Chitosan-silica nanocomposite	Methyl orange	7 mg/g	Langmuir model	—	[74]
Chitosan/Silica/ZnO nanocomposite	Methylene blue	293.3 mg/g	Langmuir model	Pseudo-second-order	[75]
Molecularly imprinted polymer (MIP) chitosan-TiO2nanocomposite (CTNC)	Rose bengal	79.365 mg/g	Langmuir model	Pseudo-second-order	[76]
Magnetic nanocomposite of chitosan/SiO2/CNTs (MNCSC)	Direct blue 71 (DB71) reactive blue 19 (RB19)	97.08 mg/g	Langmuir model	Pseudo-second-order	[78]