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Parametric Study of the Adsorption of Pb (II) and Cr (VI) Ions on Modified PAN-Kapok Fibers

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Abstract:

This paper presents a parametric study on the adsorptive property of NaOH-treated polyacrylonitrile (PAN)-kapok fibers for the removal of Pb (II) and Cr (VI) ions in aqueous solutions. Generally, the NaOH-hydrolyzed PAN-kapok favors the adsorption of Pb (II) compared to Cr (VI). The adsorption capacity was in the range of 41.67-83.33 mg/g as the initial Pb (II) concentration was increased from 50 to 100 ppm. Similarly, the adsorption capacity for Cr (VI) was from 8.24 to 15.81 mg/g as the initial concentration was raised from 50 to 150 ppm. The adsorption capacity was also enhanced by increasing the adsorbent dosage. Finally, uptake of Pb (II) at the early stages of the adsorption was fast, with adsorption capacity reaching ~120 mg/g.

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Periodical:

Key Engineering Materials (Volume 880)

Pages:

133-138

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.880.133

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Online since:

March 2021

Authors:

Jericko C. Alipoyo, Venniece Etienne B. Magoncia, Angel Ainaleigh M. Perido, Mary Donnabelle L. Balela*

Keywords:

Adsorption, Heavy Metals, Hydrolysis, Kapok Fibers

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