New Delhi: A low-cost method to remove fluoride from drinking water with specially made teabag-like pouches has been developed by a team of Indian researchers.
The new method uses pouches covered with nanoparticles synthesized from organically-grown jojoba seeds to remove fluoride from water. Jojoba is easily available and nanoparticles used (iron and aluminum) are synthesized from waste byproducts of oil extraction process from jojoba seeds.
After synthesis, nanoparticles were soaked onto a foam material—polyurethane foam—wherein the nanoparticles get stuck to the surface of the foam. Infusion pouches or bags were then made from the nanoparticle-coated foam sheet. The nanoparticles on the pouches attract fluoride in the water and they too get stuck to the surface of the pouch. This process is commonly used water purification method called adsorption.
Dr Suphiya Khan (above) and fluoride-removing teabags developed by her team.