Document Type : Original Article

Authors

Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran

Abstract

New modified chitosan Schiff base (EP-CS-SB) composite was prepared from the reaction of chitosan, epichlorohydrin and trans-cinnamaldehyde (molar ratio 1:1:1) and characterized by Fourier-transform infrared spectroscopy (FT-IR), ultraviolet–visible spectroscopy (UV-Vis), thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscope (SEM) analysis. It was applied as a new adsorbent for removal of methyl green (MG) dye. The effects of different significant parameters, such as pH solution (2-10), adsorbent dosage (0.005, 0.01 and 0.02 g) and contact time (0 – 120 min) were explored. Results show that the adsorption process was depended on pH solution. The highest adsorption capacity of EP-CS-SB was obtained 98.47% at pH =8, 120 min, and 0.02 g of EP-CS-SB. EP-CS-SB was found to be a suitable candidate for removal of cationic dye.

Graphical Abstract

An efficient removal of methyl green dye by adsorption onto new modified chitosan Schiff base

Keywords

Main Subjects

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