title: Adsorption of chromium (VI) from aqueous solutions by cellulose modified with β-CD and quaternary ammonium groups.
abstract: Cellulose powder was grafted with the vinyl monomer glycidyl methacrylate using ceric ammonium nitrate as initiator and was further derived with β-CD and quaternary ammonium groups to build Cell-g-GMA-β-CDN(+) adsorbent. Epoxy cellulose was made up of Cell-g-GMA and Cell-hydro-g-GMA, and was found to contain 3.71 mmol g(-1) epoxy groups. The adsorption process of the modified cellulose was described by the Langmuir model of adsorption well, and the maximum adsorption capacity of chromium (VI) reached 61.05 mg g(-1). The adsorption-desorption tests of β-CDN(+)-type cellulose derivatives exhibited that the reproducibility of the adsorbent was well and the adsorbent could be reused five times at least.
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Jinming Street, Kaifeng, Henan 475004, PR China. zhouyanmei@henu.edu.cn
authors.forename: Yanmei
authors.initials: Y
authors.lastname: Zhou
authors.forename: Qiang
authors.initials: Q
authors.lastname: Jin
authors.forename: Tianwei
authors.initials: T
authors.lastname: Zhu
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Akama
mesh_terms: D000327:Adsorption; D002482:Cellulose / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D015203:Reproducibility of Results; D012996:Solutions; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D000644:Quaternary Ammonium Compounds; D012996:Solutions; D014874:Water Pollutants, Chemical; D047392:beta-Cyclodextrins; D014867:Water; D002857:Chromium; D002482:Cellulose; C031215:betadex