Superhigh Adsorption of Cadmium(II) Ions onto Surface Modified Nano Zerovalent Iron Composite (CNS-nZVI): Characterization, Adsorption Kinetics and Isotherm Studies

Prabu Deivasigamani1, Senthil Kumar Ponnusamy2, Sathish Sundararaman1, Suresh A1 (pp 457-464)
Affiliation: 
1 Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, India 2 Department of Chemical Engineering, SSN College of Engineering, Chennai-603110, India sathish.chemical@sathyabama.ac.in
DOI: 
https://doi.org/10.23939/chcht15.04.457
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Abstract: 
The efficiency of surface modified nanoscale zerovalent iron (nZVI) composite by cashew nut shell (CNS) was tested for the removal of cadmium ions from the aqueous solutions. 2 g/l CNS-nZVI was efficient for 98% removal. The adsorption capacity was 35.58 mg/g. The Freundlich isotherm (R2 = 0.9769) and the pseudo-second order adsorption kinetics data fitted well. This proved CNS-nZVI has a high removal efficiency for Cd(II) from aqueous solutions.
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