Synthesis and characterization of cyclodextrin-based acrylamide polymer flocculant for adsorbing water-soluble dyes in dye wastewater | Zendy

Qiong Su | Zendy; Yuxing Wang | Zendy; Wanhong Sun | Zendy; Junxi Liang | Zendy; Shujuan Meng | Zendy; Yanbin Wang | Zendy; Zhenhua Li | Zendy

Open Access

Synthesis and characterization of cyclodextrin-based acrylamide polymer flocculant for adsorbing water-soluble dyes in dye wastewater

Author(s) -

Qiong Su,

Yuxing Wang,

Wanhong Sun,

Junxi Liang,

Shujuan Meng,

Yanbin Wang,

Zhenhua Li

Publication year - 2020

Publication title -

royal society open science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.84

H-Index - 51

ISSN - 2054-5703

DOI - 10.1098/rsos.191519

Subject(s) - adsorption , thermogravimetric analysis , langmuir adsorption model , flocculation , fourier transform infrared spectroscopy , cationic polymerization , polymerization , polymer , chemistry , nuclear chemistry , desorption , chemical engineering , cyclodextrin , materials science , chromatography , organic chemistry , engineering

A novel hydrophobic and cationic cyclodextrin-based acrylamide flocculant (AM-β-CD-DMDAAC) was prepared by chemical oxidative polymerization to adsorb water-soluble dyes in dye wastewater. Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscope and thermogravimetric (TG) measurements results demonstrated that the AM-β-CD-DMDAAC was successfully synthesized. The effects of pH, contact time, initial dye concentration, temperature and adsorbent dose on dye removal efficiency for AM-β-CD-DMDAAC flocculants were investigated. The kinetic data were found to follow the pseudo-second-order kinetic model. The equilibrium adsorption data were fitted to the Langmuir isotherm model, with the maximum adsorption capacity of 147.1 mg g −1 . The adsorbent retained about 60% of the adsorption efficiency after three adsorption/desorption cycles, which implied a promising application as the dye adsorbent.

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