Iranian Polymer Journal

, Volume 27, Issue 7, pp 461–468 | Cite as

Biosorption of cadmium using a novel, renewable and recoverable modified natural cellulose bearing chelating Schiff base ligand based on 2-hydroxy-5-methyl benzaldehyde

  • Atena Naeimi
  • Malihe Amini
Original Research


Natural cellulose was extracted from Sesbania sesban plant. A novel approach toward chemically modified cellulose, bearing active chelating Schiff base, was synthesized using 2-hydroxy-5-methyl benzaldehyde. The chemical and structural features of the adsorbent were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive analysis of X-ray (EDAX) observations, elemental analysis, and thermogravimetric analysis (TGA). It was used as a cheap and renewable biosorbent for removal of cadmium (II). SEM image confirmed the microfibril structure of microcomposite. TGA showed that the stability of modified cellulose was increased to 700 °C. EDAX showed the elements of C and O of cellulose and Si, Fe and Cl of modified cellulose-based ligand of 2-hydroxy-5-methyl benzaldehyde. The elemental analysis confirmed the presence of Schiff base ligand in the structure of microcomposite. The experimental conditions and adsorption parameters, including pH, initial metal ion concentration and adsorbent dosage were optimized. The cellulose biomass exhibited the highest metal ions uptake capacity (9.39 mg/g) at pH value of 4.0, biomass dosage of 0.01 g/L and cadmium concentration of 150 mg/L.


Microcomposite Renewable biosorption Cadmium Cellulose Schiff base 


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Copyright information

© Iran Polymer and Petrochemical Institute 2018

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceUniversity of JiroftJiroftIran
  2. 2.Department of Environmental Science, Faculty of Natural ResourcesUniversity of JiroftJiroftIran

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