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International Journal of Advanced Research in Biological Sciences (2015)
  • Satish Bhalerao, Wilson College
The present investigation revealed that peanut hulls (Arachis hypogaea Linn.) can be an inexpensive, excellent biosorbent for the
removal of zinc (II) ions from aqueous solutions. FTIR analysis of biosorbent confirmed that hydroxyl, carbonyl and carboxyl
group, so that the cell wall surface of the biosorbent that may interact with the zinc (II) ions. The SEM represents a porous
structure with large surface area.The optimal parameters such as solution pH, biosorbent dose, initial zinc (II) ions concentration,
contact time and temperature determined in the experiment were effective in determining the efficiency of zinc (II) ions onto
peanut hulls(Arachis hypogaea Linn.). The maximum zinc (II) ion loading capacity (qm) of peanut hulls (Arachis hypogaea Linn.)
was found to be 14.492 mg g-1 with perfect fit to Langmuir isotherm model and follows pseudo-second order kinetics. The
thermodynamic study confirmed that reaction of biosorption of zinc (II) ions onto peanut hulls (Arachis hypogaea Linn.) is
spontaneous, endothermic and increasing randomness of the solid solution interfaces. From these observations it can be
concluded that peanut hulls (Arachis hypogaea Linn.) has considerable biosorption capacity, available in abundant, nonhazardous
agro material could be used as an effective indigenous material for treatment of wastewater stream containing zinc (II)
  • zinc (II) ions,
  • Arachis hypogaea Linn,
  • FTIR,
  • SEM,
  • adsorption isotherm,
  • adsorption kinetics,
  • thermodynamic study.
Publication Date
Summer May 5, 2015
Citation Information
Satish Bhalerao. "ijarbs19.pdf" International Journal of Advanced Research in Biological Sciences Vol. 2 Iss. 4 (2015) p. 136 - 150 ISSN: ISSN : 2348-8069
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