High efficient removal of lead(II) and cadmium(II) ions from multi-component aqueous solutions using polyacrylic acid acrylonitrile talc nanocomposite.

Autor: Abass MR; Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt. mohamed.ragab2014300@yahoo.com., El-Kenany WM; Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt., El-Masry EH; Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2022 Oct; Vol. 29 (48), pp. 72929-72945. Date of Electronic Publication: 2022 May 26.
DOI: 10.1007/s11356-022-21023-1
Abstrakt: This study is interested in the removal of Pb(II), Cd(II), Co(II), Zn(II), and Sr(II) onto polyacrylic acid acrylonitrile talc P(AA-AN)-talc nanocomposite. P(AA-AN)-talc was fabricated using γ-irradiation-initiated polymerization at 50 kGy. Different analytical tools were used to investigate the functional groups, morphology, particle size, and structure of this composite. The ability of P(AA-AN)-talc to capture (Pb 2+ , Cd 2+ , Co 2+ , Zn 2+ , and Sr 2+ ) as multi-component aqueous solutions was performed by a batch method. Saturation capacity and the effect of (agitating time, pH, initial metal concentrations, and temperature) were investigated. The distribution coefficients at different pHs have order: Pb 2+  > Cd 2+  > Co 2+  > Zn 2+  > Sr 2+ . The saturation capacity decreases by increasing heating temperatures. Reaction kinetic obeys the pseudo-second-order model. Sorption isotherms are more relevant to a Langmuir isotherm, and the monolayer sorption capacity is closed to saturation capacity. Thermodynamic parameters (∆G˚, ∆H˚, and ∆S˚) were endothermic and spontaneous. P(AA-AN)-talc is used for loading and recovery of studied cations in the column system. The study confirms that P(AA-AN)-talc is a promised composite for the sorption of the studied ions from aqueous solutions and should be considered as potential material for decontaminating these ions.
(© 2022. The Author(s).)
Databáze: MEDLINE
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