Breakthrough in Nanofiltration: Researchers Develop Sustainable Materials for Water Treatment

Strategic Insights -

Researchers at Beijing Forestry University have made a significant discovery in the field of nanofiltration, developing a sustainable material that can efficiently treat water while being environmentally friendly. The new material, made from citrus pectin, has shown impressive performance in rejecting dyes and exhibiting excellent stability and regeneration. This breakthrough has the potential to revolutionize the water treatment industry, particularly in acidic environments.

Key Takeaways:

  • The researchers used citrus pectin, an anionic polysaccharide, as the primary material for the nanofiltration membrane, leveraging its biocompatibility and environmental friendliness.
  • The addition of mesoporous MIL-100(Fe) as a nanofiller improved the compatibility and dispersion of the material, resulting in enhanced membrane integrity, permeability, and selectivity.
  • The optimized CP/m-MIL-0.3% membrane achieved a pure water permeability of 153.45 LMH/bar, CR rejection of 99.62%, and low NaCl rejection of 8.00%.
  • The membrane exhibited excellent hydrophilicity and negative surface charge, achieving a CR/NaCl selectivity ratio of 131.13, outperforming many reported natural polymer-based NF membranes.
  • The material demonstrated strong resistance to acid and solvents, ensuring long-term stability and regeneration.
  • This green and scalable strategy for fabricating high-performance NF membranes has significant potential for efficient and durable water treatment, particularly in acidic environments.

Statistics:

  • Pure water permeability: 153.45 LMH/bar
  • CR rejection: 99.62%
  • Low NaCl rejection: 8.00%
  • CR/NaCl selectivity ratio: 131.13
  • Time period of stability and regeneration: not specified
  • Temperature range for operation: not specified
  • Comparison with existing natural polymer-based NF membranes: significant outperformance

Sources:

  • 2025: International Journal of Biological Macromolecules
  • "Hybrid citrus pectin-based nanofiltration membranes incorporating meso-MIL-100(Fe) for acid-resistant and efficient dye separation" by Guiru Chen et al.
  • International Journal of Biological Macromolecules: www.journals.elsevier.com/international-journal-of-biological-macromolecules/
  • Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University: not specified