Adsorption of Pb2+ ions in aqueous media using the new zeolite nanocomposite adsorbent CaOCdO/ZSM5 synthesized with new techniques | Zendy

Sadeghi Meysam | Zendy; Zarshenas Pourya | Zendy

Open Access

Adsorption of Pb2+ ions in aqueous media using the new zeolite nanocomposite adsorbent CaOCdO/ZSM5 synthesized with new techniques

Author(s) -

Sadeghi Meysam,

Zarshenas Pourya

Publication year - 2022

Publication title -

open journal of analytical and bioanalytical chemistry

Language(s) - English

Resource type - Journals

ISSN - 2689-7628

DOI - 10.17352/ojabc.000023

Subject(s) - adsorption , zeolite , aqueous solution , nanocomposite , langmuir adsorption model , endothermic process , inorganic chemistry , materials science , chemical engineering , ion , chemistry , nuclear chemistry , organic chemistry , catalysis , nanotechnology , engineering

ZSM-5 `is a porous zeolite material that reveals good activity for the adsorption of heavy metals and other contaminants for effluent purification. In this scientific research, we synthesized the novel CaO-CdO/ZSM-5 zeolite nanocomposite adsorbent and studied the effects of different parameters on the adsorption of Pb2+ ions from water media for the first time. About 99.2% adsorption removal efficiency was obtained after a contact time of 60 min and an adsorbent amount of 0.1g/L for an initial Pb2+ concentration of 200mg/L at pH 8 and temperature of 60oC. The adsorption kinetic fit well via the pseudo-second-order model. Furthermore, the adsorption results were reproduced using the Langmuir isotherm with a maximum adsorption capacity of mg/g. The thermodynamic data displayed that the adsorption of Pb2+ ions over the CaO-CdO/ZSM-5 nanocomposite was endothermic and spontaneous.

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