Evaluation of Pb (II) and Cd (II) biosorption from aqueous solution by Ziziphus lotus stem powder (ZLSP)

Nosair El Yakoubi , Mounia Ennami , Naouar Ben Ali , Zineb Nejjar El Ansari , Mohammed L'bachir EL KBIACH1 , Loubna Bounab , Brahim El Bouzdoudi

Abstract

The ability of Zizyphus lotus stem powder (ZLSP) to remove Pb (II) and Cd (II) ions from an aqueous solution was evaluated. The present phenomenon of biosorption was revealed to depend on pH, biosorbent dosage, temperature, initial ionic concentration, time of contact and biosorbent's particle size. The sorption process was exothermic (∆H°0). Gibbs free energy data (∆G°

Key Words

biosorption; isotherm; kinetic; thermodynamic; Ziziphus lotus

Address

Nosair El Yakoubi, Naouar Ben Ali, Mohammed L'bachir EL KBIACH
and Brahim El Bouzdoudi — Plant Biotechnology Team, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
Mounia Ennami — Agronomic and Veterinary Institute Hassan II (IAV), Production, Protection and Plant Biotechnology Department, Rabat, Morocco
Zineb Nejjar El Ansari — Plant Biotechnology Team, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco/ Life and Health Sciences Team, Faculty of Medicine and Pharmacy, Abdelmalek Essaadi University, Tétouan, Morocco
Loubna Bounab — Advanced Materials, Structures and Civil Engineering Team, ENSA Tetouan, Abdelmalek Essaadi University, Tetouan, Morocco

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