Synthesis, characterization and Cr(VI) uptake study of polyaniline coated chitin

Rathinam Karthik; Sankaran Meenakshi

doi:10.1016/j.ijbiomac.2014.08.022

Synthesis, characterization and Cr(VI) uptake study of polyaniline coated chitin

Rathinam Karthik, Sankaran Meenakshi

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

The present work describes the synthesis, characterization of polyaniline coated chitin (PCC) and its application as an adsorbent of the removal of Cr(VI) ions from aqueous solution. The synthesized PCC was characterized using FTIR, XRD, SEM-EDX, BET, TGA, and DSC. The batch adsorption system was used to optimize the various parameters for the removal of Cr(VI) ions from aqueous solution by PCC. The equilibrium data obtained at optimized conditions were well described by Freundlich isotherm model than the Langmuir isotherm model. The values of δG⁰, δH⁰ and δS⁰ indicate the spontaneous and the endothermic nature of the adsorption process. The pseudo-second-order kinetic model fitted well to the kinetic data. The regeneration studies revealed that the Cr(VI) loaded PCC could be reused for three consecutive cycles.

Original language	English
Pages (from-to)	235-242
Number of pages	8
Journal	International Journal of Biological Macromolecules
Volume	72
DOIs	https://doi.org/10.1016/j.ijbiomac.2014.08.022
State	Published - 1 Jan 2015
Externally published	Yes

Keywords

Adsorption
Chitin
Polyaniline

ASJC Scopus subject areas

Structural Biology
Biochemistry
Molecular Biology

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10.1016/j.ijbiomac.2014.08.022

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title = "Synthesis, characterization and Cr(VI) uptake study of polyaniline coated chitin",

abstract = "The present work describes the synthesis, characterization of polyaniline coated chitin (PCC) and its application as an adsorbent of the removal of Cr(VI) ions from aqueous solution. The synthesized PCC was characterized using FTIR, XRD, SEM-EDX, BET, TGA, and DSC. The batch adsorption system was used to optimize the various parameters for the removal of Cr(VI) ions from aqueous solution by PCC. The equilibrium data obtained at optimized conditions were well described by Freundlich isotherm model than the Langmuir isotherm model. The values of δG0, δH0 and δS0 indicate the spontaneous and the endothermic nature of the adsorption process. The pseudo-second-order kinetic model fitted well to the kinetic data. The regeneration studies revealed that the Cr(VI) loaded PCC could be reused for three consecutive cycles.",

keywords = "Adsorption, Chitin, Polyaniline",

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AU - Karthik, Rathinam

AU - Meenakshi, Sankaran

PY - 2015/1/1

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N2 - The present work describes the synthesis, characterization of polyaniline coated chitin (PCC) and its application as an adsorbent of the removal of Cr(VI) ions from aqueous solution. The synthesized PCC was characterized using FTIR, XRD, SEM-EDX, BET, TGA, and DSC. The batch adsorption system was used to optimize the various parameters for the removal of Cr(VI) ions from aqueous solution by PCC. The equilibrium data obtained at optimized conditions were well described by Freundlich isotherm model than the Langmuir isotherm model. The values of δG0, δH0 and δS0 indicate the spontaneous and the endothermic nature of the adsorption process. The pseudo-second-order kinetic model fitted well to the kinetic data. The regeneration studies revealed that the Cr(VI) loaded PCC could be reused for three consecutive cycles.

AB - The present work describes the synthesis, characterization of polyaniline coated chitin (PCC) and its application as an adsorbent of the removal of Cr(VI) ions from aqueous solution. The synthesized PCC was characterized using FTIR, XRD, SEM-EDX, BET, TGA, and DSC. The batch adsorption system was used to optimize the various parameters for the removal of Cr(VI) ions from aqueous solution by PCC. The equilibrium data obtained at optimized conditions were well described by Freundlich isotherm model than the Langmuir isotherm model. The values of δG0, δH0 and δS0 indicate the spontaneous and the endothermic nature of the adsorption process. The pseudo-second-order kinetic model fitted well to the kinetic data. The regeneration studies revealed that the Cr(VI) loaded PCC could be reused for three consecutive cycles.

KW - Adsorption

KW - Chitin

KW - Polyaniline

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SN - 0141-8130

VL - 72

SP - 235

EP - 242

JO - International Journal of Biological Macromolecules

JF - International Journal of Biological Macromolecules

ER -

Synthesis, characterization and Cr(VI) uptake study of polyaniline coated chitin

Abstract

Keywords

ASJC Scopus subject areas

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