Mathematical modeling and thermodynamic study of copper (II) removal from aqueous solution by Coriandrum Sativum seeds


  • Lamya Kadiri Ibn Tofail University, Faculty of sciences
  • Ahmed Lebkiri Ibn Tofail University, Faculty of sciences
  • EL Housseine Rifi Ibn Tofail University, Faculty of sciences
  • Abdelkarim Ouass Ibn Tofail University, Faculty of sciences
  • Youness Essaadaoui Ibn Tofail University, Faculty of sciences
  • Imane Lebkiri Ibn Tofail University, Faculty of sciences



Coriandrum Sativum seeds (CSS), were tested as a new eco-friendly adsorbent of copper ions from aqueous solutions. Hence, the effect of the most influencing experimental parameters such as initial concentration of Cu (II) and the temperature was studied upon the adsorption process in order to use its results in following studies. Lagergren pseudo-first-order, pseudo-second-order, and Intraparticle diffusion models were used to describe the biosorption kinetics. The adsorption process was also analyzed by Langmuir, Freundlich and Temkin models and the maximum monolayer biosorption capacity of CSS was found to be 33,5 mg. g−1 by using the Langmuir model. So as to investigate the thermodynamic properties of the adsorption process, the Gibbs free energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) values in the temperature range of 25-55C° were also calculated in order to conclude the process characteristics. SEM and EDAX analysis were effectuated in order to study the surface morphology of CSS before and after the adsorption process.


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Environmental Chemistry