Isotherm, Kinetic and Thermodynamic Studies on the Removal of Methylene Blue Dye from Aqueous Solution Using Saw Palmetto Spent

  • Pradeep Kumar Papegowda
  • Akheel Ahmed Syed
Research paper


In the present research work Saw palmetto spent (SPS) was used to remove Methylene blue (MB) from aqueous solution economically. SEM and FTIR Studies were made to understand the Morphological properties of the adsorbent. Various parameters of adsorption such as, initial dye concentration, contact time, pH and temperature were studied. Langmuir, Freundlich and Temkin isotherm models were used to explain the adsorption behaviour. Pseudo-first order, pseudo-second order kinetic models and Intra-particle diffusion model were used to study adsorption kinetics. The maximum adsorption capacity value (q m = 90.9 mg g−1) for Langmuir isotherm was near to the experimental value (q m = 71.00 mg g−1). Thermodynamics of adsorption was studied and the values obtained indicate that the process is endothermic and spontaneous. It is confirmed that, SPS is an efficient adsorbent for removal of MB from aqueous solution.


Saw palmetto spent Methylene blue Biosorbent Adsorption isotherms Intra-particle diffusion 



The authors gratefully acknowledge University Grants Commission, Government of India for the award of Research Fellowship in Science for meritorious students (Pradeep Kumar P).


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Copyright information

© University of Tehran 2017

Authors and Affiliations

  1. 1.Department of Studies in ChemistryUniversity of MysoreMysuruIndia
  2. 2.University of MalayaKuala LumpurMalaysia

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