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Title: Removal of arsenic from aqueous solution by an adsorbent nickel ferrite-polyaniline nanocomposite
Authors: Agrawal, Sonal
Singh, N B
Keywords: Neckel ferrite;Nanocomposite;Arsenic;Adsorption;Langmuir isotherm
Issue Date: Sep-2016
Publisher: NISCAIR-CSIR, India
Abstract: Nickel ferrite-polyaniline nanocomposite has been prepared and characterized using different techniques. The prepared nanocomposite is used as an adsorbent for the removal of arsenic from aqueous solution of sodium arsenite. The effect of temperature on the equilibrium adsorption of As(III) from aqueous solution on nanocomposite has been investigated. Effect of pH (2-12), contact time (0-70 min), adsorbent dose (0.1-0.8) and initial metal ion concentration (10-30 mg/L) on the removal of As (III) have been studied. The maximum removal efficiency is found at pH 8.0. It is found that nickel ferrite-polyaniline is a better adsorbent for removal of As(III) as compared to many others. The Langmuir adsorption isotherm model fits the data well and the process is found to be pseudo-second order. In order to understand the adsorption process, thermodynamic parameters such as ΔG°, ΔH°, and ΔS°, have been calculated.
Page(s): 374-383
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.23(5) [September 2016]

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