effective removal of methyl green from aqueous solution using epichlorohydrine cross-linked chitosan

Epichlorohydrin cross-linked chitosan (ep-cs) was prepared was characterized using fourier transform infrared spectroscopy (ft-ir), x-ray powder diffraction (xrd), thermal gravimetry (tg-dta) and differential calorimetric analysis (dsc), and used as adsorbent for methyl green (mg) removal. epy-chit was soaked in methyl green solution with concentration of 40 mg/l using a batch adsorption system, to measure the adsorption capacity of the ep-cs and the percentage of mg removed from the aqueous solution. the optimum mg adsorption on ep-cs occurred at ph 7.8, agitation time of 60 minute and adsorbent dosage of 0.02 g were observed. adsorption results show that the ep-cs exhibited the excellent performance for the mg removal from aqueous solution. this study suggests that ep-cs could be explored as an adsorbent for removing other organic pollutants.