Functionalized Glutathione on Chitosan-Genipin Cross-Linked Beads Used for the Removal of Trace Metals from Water

Table 4

Maximum adsorption capacity of different modified chitosan adsorbents for Fe(II) and Cu(II) in aqueous solution.

Adsorbent	qmax (mg ⋅ g^−1)
	Fe(II)
Chitosan cross-linked with glutaraldehyde [75]	47.25
Chitosan cross-linked with epichlorohydrin [75]	57.47
Chitosan cross-linked with ethylene glycol diglycidyl ether [75]	38.61
Mayflower seed carbon [76]	49.75
Functionalized-glutathione on chitosan-genipin cross-linked beads (CS-GG)	126.4
	Cu(II)
Chitosan nanofibrils [23]	168.7
Tannin-phenolic immobilized on cellulose [77]	55.97
Chitosan/polyvinylalcohol/polyethyleneimine membrane [78]	86.08
Magnetic-epichlorohydrin cross-linked chitosan [14]	123.10
Chitosan cross-linked with epichlorohydrin-triphosphate [79]	130.72
Functionalized-glutathione on chitosan-genipin cross-linked beads (CS-GG)	156.4