Abstract
Electrospun chitosan/poly(ethylene oxide) nanofibers were synthetized, characterized and applied as alternative biosorbents to remove pigments from pretreated crude glycerol. The pigments removal efficiency of electrospun nanofibers was examined by comparing the adsorption capacity of nanofibers with other chitosan–based biosorbents. Pseudo–first order, pseudo–second order and Elovich models were used to estimate kinetic parameters. The nanofibers exhibited continuous fibers, with the average fibers diameter of 526 ± 101 nm. The results also indicated interactions between chitosan and poly(ethylene oxide) molecules, without changing the main adsorptive sites of chitosan. Furthermore, chitosan/poly(ethylene oxide) nanofibers exhibited higher relative adsorption capacity (120 g−1) than chitosan powder (35 g−1) and chitosan biopolymeric film (58 g−1). The pseudo–first order and Elovich models were the most suitable models to represent the kinetic behavior of the composite nanofiber.
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