تجاوز إلى المحتوى الرئيسي

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

Author name : Ibrahim hotan zaidi alsohaimi
Publication Date : 2018-11-12
Journal Name : Journal of Sol-Gel Science and Technology

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.

Keywords

Phosphorylated sawdust ● Adsorption ● Toxic metals ● Adsorption models

Publication Link

https://doi.org/10.1007/s10971-018-4870-0

Block_researches_list_suggestions

Suggestions to read

HIDS-IoMT: A Deep Learning-Based Intelligent Intrusion Detection System for the Internet of Medical Things
Ahlem . Harchy Ep Berguiga
Generalized first approximation Matsumoto metric
AMR SOLIMAN MAHMOUD HASSAN
Structure–Performance Relationship of Novel Azo-Salicylaldehyde Disperse Dyes: Dyeing Optimization and Theoretical Insights
EBTSAM KHALEFAH H ALENEZY
“Synthesis and Characterization of SnO₂/α-Fe₂O₃, In₂O₃/α-Fe₂O₃, and ZnO/α-Fe₂O₃ Thin Films: Photocatalytic and Antibacterial Applications”
Asma Arfaoui
تواصل معنا