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New Matrix of Chitosan Nanoparticles-Alginate/ Methyl Acrylate (CS NPs-Alg/MA) Composite Beads for Efficient Removal of Lead Ions

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Abstract

Purpose

Modified biopolymers have attracted considerable attention in water treatment recently due to the natural availability, environmental compatibility, cheap price etc.

Methods

In the present study, Chitosan Nanoparticles-Alginate/ Methyl Acrylate (CS NPs-Alg/MA) beads were prepared. They successfully applied as an adsorbent in the process of removing harmful Pb2+ ions from their aqueous solutions. SEM, EDX, and FTIR studies to characterize the structure of the modified materials before adsorption were used. Varied factors of Pb2+ ions adsorption including contact time, pH of solutions, adsorbent dosage, and initial concentration of the metal ions were studied for optimizing the adsorption efficiency of the (CS NPs-Alg/MA) beads.

Results

According to the findings, the equilibrium uptake increased as the metal ion concentration increased, and the maximum adsorption capacity found to be 80.6 mg/g for Pb2+ ions. In addition, kinetics and isotherms were applied to the process of adsorption to understand better the fundamentals underlying this process and how it occurs. R2 values for Langmuir isotherm model (R² = 0.9998) were greater than those for Freundlich model’s correlation coefficients (R² = 0.823). Therefore, it was evident that Langmuir model adequately explained Pb2+ ions adsorption onto CS NPs-Alg/MA adsorbent. Moreover, the kinetics of the adsorption was consistent with a pseudo-second-order model. The prepared beads were regenerated well using a dilute acidic solution and still maintained good adsorption capacity after regeneration.

Conclusions

The synthesized (CS NPs-Alg/MA) beads can be a successful adsorbent for Pb2+ ions from their aqueous environment.

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Data Availability

The data That support the findings of this article are available upon request from the corresponding author [Korany A. Ali].

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Authors and Affiliations

  1. Center of excellence for advanced science, Advanced Materials and Nanotechnology Group National Research Centre, 12622, Dokki, Giza, Egypt

    Mohamed Awed & Korany A. Ali

  2. Chemistry Department,, Faculty of Science, Giza, Egypt

    Riham R. Mohamed

  3. Water Pollution Research Department, National Research Centre, 12622, Giza, Egypt

    Kholod H. Kamal

  4. Applied Organic Chemistry Department, National Research Centre, 12622, Dokki, Giza, Egypt

    Korany A. Ali

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Awed, M., Mohamed, R.R., Kamal, K.H. et al. New Matrix of Chitosan Nanoparticles-Alginate/ Methyl Acrylate (CS NPs-Alg/MA) Composite Beads for Efficient Removal of Lead Ions. Chemistry Africa 7, 877–889 (2024). https://doi.org/10.1007/s42250-023-00806-0

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