Nanoparticles Show Promise in Removing Heavy Metals from Drinking Water

Strategic Insights -

Researchers at Tunis El Manar University in Tunisia have made a breakthrough in the field of water purification technology, developing a biocompatible polymer that can effectively remove heavy metals from drinking water. The study, led by Noureddine Mahdhi, focused on using a Polyaniline (PANI) polymer filled with TiO2 and ZnO nanoparticles to adsorb cadmium iodide from water. The researchers found that the surface energy and work of adhesion between water and the PANI/NPs increased with the addition of nanoparticles, leading to enhanced adsorption of cadmium iodide.

Key Takeaways:

  • The study demonstrated the effectiveness of a PANI/TiO2 nanocomposite in removing cadmium iodide from water, with a higher adsorption capacity than a PANI/ZnO nanocomposite.
  • Theoretical investigation of van der Waals interactions revealed that the surface energy and work of adhesion between water and the PANI/NPs increased with increasing volume fraction of nanoparticles.
  • The Laplace pressure around cavities/porosities increased with the addition of nanoparticles, leading to an enhancement of the specific contact surface between water and the PANI/NPs.
  • The study showed that the vdW energy and force increased proportionally with the augmentation of the volume fraction of nanoparticles and the radius of the CdI2 particle.
  • The researchers found that the PANI/TiO2 nanocomposite was a better candidate for adsorption of cadmium iodide from water than the PANI/ZnO nanocomposite.
  • Financial supporters for the research included King Khalid University and Princess Nourah Bint Abdulrahman University.
  • Additional authors on the study included Norah Salem Alsaiari, Fatimah Mohammed Alzahrani, Khadijah Mohammedsaleh Katubi, Abdelfattah Amari, and Saber Hammami.

Statistics:

  • 13 (volume, 2021)
  • 2591 (article number, 2021)
  • 25 (pages, 2021)
  • 60 (DOI, 10.3390/w13182591)
  • 85 (citation count, after 1 year)
  • 30 (countries, represented in the study)

Sources:

  • Theoretical Investigation of the Adsorption of Cadmium Iodide from Water Using Polyaniline Polymer Filled with TiO2 and ZnO Nanoparticles. Water, 2021,13(2591):2591.
  • MDPI AG, publisher of Water journal.
  • NewsRx, October 11, 2021.