Main content area

Synthesis and characterization of a novel microcrystalline cellulose-based polymeric bio-sorbent and its adsorption performance for Zn(II)

Wang, Aili, Li, Shuhui, Chen, Hou, Hu, Yanping, Peng, Xiong
Cellulose 2019 v.26 no.11 pp. 6849-6859
Fourier transform infrared spectroscopy, adsorbents, adsorption, biosorbents, cellulose, differential scanning calorimetry, emulsions, heavy metals, industrial wastewater, ionic liquids, kinetics, light scattering, models, polymers, sorption isotherms, thermogravimetry, zinc
The adsorption of heavy metal ion Zn(II) from industrial wastewater by performing environmentally benign methods is particularly important. In this study, a novel microcrystalline cellulose-based polymeric bio-sorbent (MCC-g-polyIL), which contained specific poly(ionic liquid) structure and adsorption performance for Zn(II), was in situ ARGET ATRP-synthesized within ionic liquid microemulsions. The ionic liquid microemulsions were characterized by phase formation capacity and dynamic light scattering results, and the prepared MCC-g-polyILs were characterized by FTIR, ¹HNMR, and TG/DSC analyses. The optimization of the adsorption process indicates that both the molar ratio of double ionic liquids and the dosage of the adsorbent affected the adsorption capacity of MCC-g-polyILs toward Zn(II). The research on adsorption kinetics and adsorption isotherms further reveals that the adsorption process follows the pseudo-second-order kinetic model and the Freundlich adsorption isotherm model. The designed MCC-g-polyILs exhibited enhanced adsorption capacity, which indicates promising practical applications for the removal of Zn(II) from industrial wastewater.