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

Citation

Su, Qiong et al. (2020), Synthesis and characterization of cyclodextrin-based acrylamide polymer flocculant for adsorbing water-soluble dyes in dye wastewater, Dryad, Dataset, https://doi.org/10.5061/dryad.cc2fqz62j

Abstract

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 (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), 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 pseudo-second-order kinetic model. The equilibrium adsorption data were fitted to Langmuir isotherm model, with the adsorption capacity 147.1 mg/g. The adsorbent retained about 60 % of the adsorption efficiency after three adsorption/desorption cycles, which implied a promising application as the dye adsorbent.

Funding

the Fundamental Research Funds for the Central Universities, Award: 31920190012

National Natural Science Foundation of China, Award: 51563022, 21968032

the fund of Teaching Quality and Reform Engineering Project of Gansu University, Award: 2019GSSYJXSFZX-01, 2019GSJXCGPY-16

the fund of the Double First-class and Characteristic Development Guide of Northwest Minzu University, Award: 11080316