Application of the response surface methodology for optimizing the adsorptive removal of chromate using a magnetic crosslinked chitosan nanocomposite

ABSTRACT Experimental design was used to optimize the adsorptive removal of chromate using a synthesized crosslinked chitosan with a magnetic NiFe2O4 core. In this regard, the response surface methodology which is based on central composite design, was used to determine the relation between the para...

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Bibliographic Details
Published in:Journal of applied polymer science 2019-02, Vol.136 (8), p.n/a
Main Authors: Zeraatkar Moghaddam, Ali, Ghiamati, E., Ayati, A., Ganjali, M. R.
Format: Article
Language:English
Subjects:
Adsorptivity
Chitosan
chromate
Chromates
Confidence intervals
Crosslinking
Design of experiments
Design optimization
isotherm
kinetic
magnetic
Materials science
Nanocomposites
Nickel ferrites
Parameters
Polymers
removal
Response surface methodology
Statistical analysis
Surface chemistry
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Summary:ABSTRACT Experimental design was used to optimize the adsorptive removal of chromate using a synthesized crosslinked chitosan with a magnetic NiFe2O4 core. In this regard, the response surface methodology which is based on central composite design, was used to determine the relation between the parameters influencing the adsorption efficiency. The statistical parameters of the resulting model were R2 = 0.9922, and F‐value = 164.48. As a final step, a nonlinear optimization was performed and the respective optimal values for pH, amount of the adsorbent, initial concentration of the pollutant, and contact time were determined as 4, 0.8 g L−1, 150 ppm, and 25 min, and the predicted removal efficiency at a 95% confidence level was determined as 100.8 ± 1.8%, which was in good agreement with the experimental value (i.e., 95.5 ± 5.7%). © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47077.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.47077