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01.02.2014 | Original Paper

Application of polyaniline/bacterial extracellular polysaccharide nanocomposite for removal and detoxification of Cr(VI)

verfasst von: V. Janaki, Mi-Na Shin, Song-Hee Kim, Kui-Jae Lee, Min Cho, A. K. Ramasamy, Byung-Taek Oh, Seralathan Kamala-Kannan

Erschienen in: Cellulose | Ausgabe 1/2014

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Abstract

Polyaniline/bacterial extracellular polysaccharide (Pn/EPS) nanocomposite was prepared by in situ polymerization of aniline using ammonium peroxydisulfate as oxidant. Transmission electron micrograph showed that the surface of the nanocomposite was rough, providing good possibility for adsorption of Cr(VI). Under optimized conditions, the nanocomposite removed 97.3 % (25 mg L⁻¹) of Cr(VI) from aqueous solution. The Freundlich isotherm model and pseudo-first order rate expression better described the adsorption equilibrium of Pn/EPS nanocomposite. X-ray diffractogram peak for Cr₂O₃ (2θ = 24.5) in the nanocomposite confirmed the reduction of Cr(VI). Fourier transform infrared spectroscopy pattern of the nanocomposite confirmed the ionic interaction between Cr species and surface functional groups. The results of the study indicate that Pn/EPS nanocomposite could be used for the removal and detoxification of Cr(VI) from aqueous solution.

Vorheriger Artikel Cellulose and chitin nanomaterials for capturing silver ions (Ag+) from water via surface adsorption

Nächster Artikel Solvent-free synthesis of carboxylate-functionalized cellulose from waste cotton fabrics for the removal of cationic dyes from aqueous solutions

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Titel: Application of polyaniline/bacterial extracellular polysaccharide nanocomposite for removal and detoxification of Cr(VI)
verfasst von: V. Janaki
Mi-Na Shin
Song-Hee Kim
Kui-Jae Lee
Min Cho
A. K. Ramasamy
Byung-Taek Oh
Seralathan Kamala-Kannan
Publikationsdatum: 01.02.2014
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 1/2014
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-013-0100-7

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