Cationic Dye Removal Using Novel Magnetic/Activated Charcoal/β-Cyclodextrin/Alginate Polymer Nanocomposite

Area of Science:

• Materials Science
• Environmental Chemistry
• Nanotechnology

Background:

• Wastewater contamination by hazardous dyes like methylene blue (MB) poses environmental risks.
• Development of efficient and regenerable adsorbents is crucial for dye removal.

Purpose of the Study:

• To synthesize and characterize novel magnetic nanocomposite materials for MB elimination.
• To evaluate the adsorption performance and regeneration capacity of the developed nano-adsorbents.

Main Methods:

• Preparation of Fe3O4/AC/CD/Alg nanocomposites via direct mixing.
• Characterization using HRTEM, SEM-EDX, FTIR, VSM, XRD, and N2 adsorption.
• Batch adsorption studies to optimize contact time, pH, adsorbent dosage, and MB concentration.

Main Results:

• Achieved 99.53% MB removal within 90 minutes.
• Langmuir isotherm model best described the equilibrium data.
• Demonstrated high adsorption capacities: 2.079 mg/g (gel beads) and 10.63 mg/g (dry powder beads).

Conclusions:

• The Fe3O4/AC/CD/Alg nanocomposite is a highly effective adsorbent for cationic dyes.
• The material exhibits excellent regeneration properties and easy recovery due to its hydrophobic surface.
• This adsorbent shows significant potential for industrial wastewater treatment applications.