Surface modification of cyclodextrin/lignin biopolymer microparticles withpolyethylene for fast and selective removal of anionic dyes

In this research, beta-cyclodextrin was grafted over lignin biopolymer by epichlorohydrin andfunctionalized with polyethyleneimine to prepare composite microparticles. After that, FTIRspectroscopy was used to characterize microspheres. The best result for removing methyl orange(MO) in the presence of ۰.۴۴ g L-۱ of adsorbent, pH ۶.۵, pollutant concentration of ۲۰ mg L-۱, andtemperature of ۲۵ °C after ۱۵ min was approximately ۹۷%. This adsorbent showed fast removal andexcellent selectivity towards anionic dyes.

کلیدواژه ها:

Biopolymer ، Lignin ، Cyclodextrin ، Adsorption ، Polyethyleneimine