Ion imprinted adsorbent for the removal of Ni(II) from waste water: preparation, characterization, and adsorption

Ion imprinted adsorbent for the removal of Ni(II) from waste water: preparation, characterization, and adsorption

In this paper, a selective nickel ions chelating adsorbents (Ni-CMCS) were prepared based on carboxymethyl chitosan by ion imprinting technique. Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were used to investigate the...

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Bibliographic Details
Published in:Journal of dispersion science and technology Vol. 40; no. 12; pp. 1751 - 1760
Main Authors: Zhang, Yong, Bai, Zhishan, Luo, Wenqiang, Zhai, Linlin, Wang, Bingjie, Kang, Xiaohu, Zong, Jieqiong
Format: Journal Article
Language:English
Published: Philadelphia Taylor & Francis 02-12-2019
Taylor & Francis Ltd
Subjects:
Adsorbents
Adsorption
Cadmium
carboxymethyl chitosan
Chelation
Chitosan
Diffusion rate
Fourier transforms
Infrared spectroscopy
ion imprinting
Manganese
Model matching
Nickel
nickel ions
Photoelectrons
Selectivity
Spectrum analysis
Waster water
Wastewater
X ray photoelectron spectroscopy
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Summary:In this paper, a selective nickel ions chelating adsorbents (Ni-CMCS) were prepared based on carboxymethyl chitosan by ion imprinting technique. Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were used to investigate their physicochemical properties. Brunauer-Emmett-Teller (BET) analysis showed that the BET surface area of Ni-CMCS had a significant increase after ion imprinting process. The effects of pH value, contact time and initial concentration of Ni(II) were studied. The adsorption kinetics were investigated, which indicated that Ni-CMCS was better fitted with pseudo-second-order kinetic model (R 2 = 0.9991) with film diffusion process as rate controlling step. The adsorption isotherms study indicated that Langmuir model matched better with the experimental data for Ni-CMCS (R 2 = 0.9617). Besides, the maximum adsorption capacity calculated from the Langmuir equation was 82.78 mg g −1 . Moreover, the selectivity experiment suggested that Ni-CMCS had good selectivity in the presence of Co(II), Mn(II), or Cd(II). After used four cycles, Ni-CMCS kept great adsorption capacity.
ISSN:0193-2691
1532-2351
DOI:10.1080/01932691.2018.1538883