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Surface Modified Agave sisalana as an Adsorbent for the Removal ofNickel from Aqueous Solutions - Kinetics and Equilibrium Studies

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2008, 9(2), pp.97-104
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

Padmini. E 1 Helen Kalavathy M 1 Lima Rose Miranda 1

1Anna University

Candidate

ABSTRACT

In the present study Sisal fiber obtained from the leaves of Agave sisalana has been chosen to validate its viability as anadsorption of Nickel was also studied. Agave sisalana fiber was found to be a cheap and effective adsorbent doing away withthe need to activate the material therby reducing processing cost. The equilibrium studies indicated that the adsorptioncapacity of raw fiber and the surface modified fiber was 8.66 and 9.77 mg/g respectively with the Langmuir isothermdescribing the adsorption phenomena better than the Freundlich and Temkin isotherm. The adsorption was found to beexothermic from the thermodynamic studies and the kinetics showed that the adsorption phenomena were second order.

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