Adsorption of chromium (VI) from aqueous solutions by cellulose modified with beta-CD and quaternary ammonium groups

作者：Zhou Yanmei^*; Jin Qiang; Zhu Tianwei; Akama Yoshifumi

来源：Journal of Hazardous Materials, 2011, 187(1-3): 303-310.

DOI：10.1016/j.jhazmat.2011.01.025

• Cr(VI)
• Modified cellulose
• Removal
• Adsorption
• Isotherm

Cellulose powder was grafted with the vinyl monomer glycidyl methacrylate using ceric ammonium nitrate as initiator and was further derived with beta-CD and quaternary ammonium groups to build Cell-g-GMA-beta-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 beta-CDN(+)-type cellulose derivatives exhibited that the reproducibility of the adsorbent was well and the adsorbent could be reused five times at least.

• 出版日期2011-3-15
• 单位河南大学