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Research Journal of Nanoscience and Nanotechnology

Year: 2012 | Volume: 2 | Issue: 2 | Page No.: 31-45
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Authors

S. Michael Anto

G. Annadurai

Keywords

Research Article

Arsenic Adsorption from Aqueous Solution Using Chitosan Nanoparticle

S. Michael Anto and G. Annadurai
Arsenic is a major pollutant for the environment, therefore using Chitosan nanoparticle the adsorption study was performed for adsorbing the Arsenic. Chitosan nanoparticle was prepared by ionic gelation method by using chitosan and Sodium tripolyphosphate (CS-STPP). The morphology and structure of chitosan nanoparticles was characterized Scanning Electron Microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) spectra and X-ray diffraction (XRD) showed the chitosan converted into chitosan nanoparticle. The adsorption capacity and adsorption isotherms using Langmuir and Freundlich isotherm for arsenic ions were investigated by equilibrium studies. Factors such as concentration of Chitosan nanoparticle, temperature effect on adsorption of arsenic and effect of pH and adsorption capacity was investigated. It is found that chitosan nanoparticles could adsorb arsenic (arsenic trioxide) effectively, the maximum capacity of arsenic (arsenic trioxide) adsorbed was obtained in Langmuir isotherm equation which showed it followed monolayer adsorption of Langmuir isotherm experimental data of arsenic adsorption equilibrium correlated well with the Langmuir isotherm equation, thus showing that chitosan nanoparticle is a good adsorbent for adsorption of water from aqueous solution.
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