Adsorption of Selenium From Aqueous Solution by Rice Husk : Characterization, Isotherm and Kinetic Studies

Authors

  • Reena Mishra  Department of Chemistry , Sam Higginbottom University of Agriculture , Technology and Sciences, Allahabad, India
  • Amit Chattree  Department of Chemistry , Sam Higginbottom University of Agriculture , Technology and Sciences, Allahabad, India
  • Shazia Siddiqui  Department of Chemistry , Sam Higginbottom University of Agriculture , Technology and Sciences, Allahabad, India

Keywords:

Rice Husk, Selenium, Adsorption, Temkin.

Abstract

The present study explores the adsorption potential of rice husk to remove selenium from aqueous solution. The presence of -OH , -NH ,and -CO groups play major role in adsorption of selenium ions onto adsorbent . The surface morphology pretends to be porous in nature. The optimum equilibrium time and pH was 120 min and 4.0. The adsorption isotherm fitted best was Temkin. The monolayer adsorption capacity of rice husk was 0.810 mg/g. The adsorption data was best fitted by pseudo- second order kinetics with regression coefficient of 0.997 and liquid film diffusion model was rate controlling step. The positive value of ?H and ?S suggest that the process was endothermic and randomness at solid - solution interface.

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2017-12-31

Issue

Volume 3, Issue 8, November-December-2017

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Research Articles

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How to Cite

[1]
Reena Mishra, Amit Chattree, Shazia Siddiqui, " Adsorption of Selenium From Aqueous Solution by Rice Husk : Characterization, Isotherm and Kinetic Studies, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 3, Issue 8, pp.495-502, November-December-2017.