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Nanoparticles

Breakthrough in Nanoparticles Research: Effective Removal of Methylene Blue from Wastewater

Strategic Insights

— 1 min read

Researchers at the National Research and Innovation Agency Republic of Indonesia have made a significant breakthrough in the field of nanoparticles, developing a new composite biosorbent that can effectively remove cationic dyes from wastewater. The study, published in the journal Case Studies in Chemical and Environmental Engineering, highlights the potential of transforming agricultural wastes into a valuable resource for environmental remediation.

Key Takeaways:

  • The researchers developed a biosorbent derived from pineapple peels and modified with zinc oxide nanoparticles, which was found to be highly effective in removing methylene blue from aqueous solution.
  • The composite biosorbent, ZnONPs/PPWB, was prepared through a green synthesis method using pineapple peel wastes as the source of reducing agent and carbon sources.
  • The study investigated several key factors, including pH, initial dye concentration, contact time, and biosorbent dosage, and found that the adsorption of methylene blue followed the Freundlich model and the Elovich kinetic model.
  • The maximum adsorption capacity of the ZnONPs/PPWB composite biosorbent was found to be 1.85 folds higher compared to the non-composite biosorbent under optimal conditions.
  • The researchers also found that the composite biosorbent exhibited greater methylene blue removal efficiency under solar irradiation compared to non-irradiated ZnONPs/PPWB.

Statistics:

  • Maximum adsorption capacity of ZnONPs/PPWB composite biosorbent: 65.43 mg/g
  • Maximum adsorption capacity of non-composite biosorbent (PPWB): 35.21 mg/g
  • Increase in adsorption capacity due to composite modification: 1.85 folds
  • pH: 7
  • Initial methylene blue concentration: 20 mg/L
  • Adsorbent dose: 10 mg/30 mL
  • Contact time: optimized for maximum removal efficiency

Sources:

  • NewsRx. Reports Outline Nanoparticles Research from National Research and Innovation Agency Republic of Indonesia (Synthesis and characterization of zinc oxide nanoparticles-carbon composite derived from pineapple peel wastes for adsorption of ...). Biotech Week. June 11, 2025; p 1135.
  • Synthesis and characterization of zinc oxide nanoparticles-carbon composite derived from pineapple peel wastes for adsorption of methylene blue from solution and photocatalytic activity. Case Studies in Chemical and Environmental Engineering, 2025, 11():101113.

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