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Chitosan is known to be a good sorbent for metal-containing ions as the presence of amino groups and hydroxyl functions act as effective binding sites. Its crosslinking, employing glutaraldehyde or epichlorohydrin, may change the sorption properties (sorption capacity or diffusion properties) of this biopolymer, since the available functional groups are different in each case. X-ray absorption spectroscopy...
To find an effective method for uranium(VI) adsorption, uranium(VI) ion-imprinted chitosan composite magnetic microsphers (U(VI)-ICCMM) were synthesized using uranium(VI) as template, chitosan as functional monomer, epichlorohydrin and glutaraldehyde as crosslinking agents. Magnetic chitosan microsphers (MCM) were synthesized without U(VI) ion-imprinted as control. Experiments were conducted in a...
Novel membranes were prepared through covalently coupling of chitosan (CS) to activate nylon membrane after the reaction of the microporous nylon membrane with formaldehyde. Non-specific adsorption on the CS-coated nylon membrane decreased greatly. Yellow 3G-P/Reactive Red 120 were then covalently immobilized onto composite membrane as dye ligands. These Red 120/Yellow 3G-P-CS-membranes were used...
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