Supporting the responsible use of nanomaterials
Nanosafety Platform general presentation
Nanomaterials, a variety of applications
Demand for water is on the
rise amid a growing global population and changing climate. In many parts of
the world, water shortages are already a reality. There is simply not enough
water to meet the demands of homes, farms, and factories. When it comes to
public health and economic development, access to water and efficient
water-treatment systems are emerging as major challenges. The use of nanomaterials can support innovative solutions that can help treat wastewater and
provide clean drinking water, for more sustainable overall water management.
To overcome today's pressing water-related challenges will require a big-picture approach and integrated solutions that take into account the needs of homes, farms, and factories.
Seawater is desalinated using nanoporous membrane filtration methods to produce drinking water. The technology can also be used to remove organic and biological pollutants (including viruses) from wastewater. The membranes used to filter water are made from nanoporous ceramics or fluorinated polymers with nanopores that are surface-treated using nanostructuring techniques to make them hydrophilic. Nanoporous membranes require two to four times less energy to filter water than traditional filtration membranes. Nano titanium dioxide is used in photo-oxidation processes to purify water, removing both pollutants and organic matter. Iron nanoparticles are used to remove the arsenic naturally present in surface water, making it safe to drink (in places like Bangladesh and northern Chile).
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.