Adsorbent Ability of Treated Peganum harmala-L Seeds for the Removal of Ni (II)‎ from Aqueous Solutions : Kinetic, Equilibrium and Thermodynamic Studies

الملخص EN

The main goal of this study was to evaluate the performance of new adsorbent, treated Peganum harmala-L seeds (TPHS), for the removal of Ni (II) from aqueous solution.

Batch experiments were performed as a function of various experimental parameters.

The adsorption studies included both equilibrium adsorption isotherms and kinetics.

Equilibrium data fitted very well with the Langmuir isotherm model.

Maximum adsorption capacity was determined 91.74 mg/g at pH 7.

Kinetics studies showed better applicability for pseudo-second-order model for both adsorbents.

The negative value of ΔG° confirmed the feasibility and spontaneity of TPHS for Ni (II) adsorption.