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Erschienen in: Journal of Sol-Gel Science and Technology 2/2019

12.11.2018 | Original Paper: Sol–gel and hybrid materials for energy, environment and building applications

Synthesis of phosphorylated raw sawdust for the removal of toxic metal ions from aqueous medium: Adsorption mechanism for clean approach

verfasst von: Mosaed Saud Alhumaimess, Ibrahim Hotan Alsohaimi, Ayoub Abdullah Alqadami, Mahmoud Mohamed Kamel, Mu. Naushad, Tansir Ahamad, Hamed Alshammari

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 2/2019

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Abstract

In this work, phosphorus oxychloride was grafted onto the surface of raw sawdust (RSD) particles to get effective adsorbent for capturing Cd(II), Cr(III), and Pb(II) metal ions from aqueous medium. Phosphorylated raw sawdust (RSD@P) was characterized by FTIR, TGA, SEM-EDX, TEM, BET, and XPS analyses. Various experimental conditions of adsorption viz. pH, contact time, temperature, and initial concentration were optimized. The adsorption behavior of RSD@P concerning adsorption kinetics, isotherms and thermodynamics was also studied. The values of qe for Cd(II), Cr(III), and Pb(II) metal ions onto RSD@P was found to be 244.3, 325, and 217 mg/g, respectively at 298 K according to monolayer Langmuir adsorption. The adsorption kinetics data revealed that Cd(II), Cr(III), and Pb(II) metal ions were well fitted to pseudo-second-order kinetic model. The thermodynamic results demonstrated that adsorption was spontaneous and exothermic. The mechanisms of interactions was also discussed for the adsorption of Cd(II), Cr(III), and Pb(II) metal ions over RSD@P. The obtained results showed that RSD@P was an auspicious adsorbent which showed outstanding reusability for the removal of metal ions from aqueous medium.

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Metadaten
Titel
Synthesis of phosphorylated raw sawdust for the removal of toxic metal ions from aqueous medium: Adsorption mechanism for clean approach
verfasst von
Mosaed Saud Alhumaimess
Ibrahim Hotan Alsohaimi
Ayoub Abdullah Alqadami
Mahmoud Mohamed Kamel
Mu. Naushad
Tansir Ahamad
Hamed Alshammari
Publikationsdatum
12.11.2018
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 2/2019
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-018-4870-0

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