Low Cost and Long Durability Material for Water Treatment: Titania-Coated Cement

Primary studies have been carried out on titanium dioxide powder, and revealed the efficient photocatalytic property of this material. More techniques have been developed to deposit the titanium dioxide particles onto a substrate, thus preserving from any further filtration after a water treatment. White cement has been used, as both a binder and a substrate, to deposit onto it titanium dioxide powder and to carry out the photodegradation of the tartrazine in an aqueous solution. The experiment has been conducted into a photocatalytic reactor designed and registered as a prototype patent. The complete photodegradation of the tartrazine molecule occurs with the same way as observed with the titanium dioxide powder in the aqueous solution of tartrazine. The same catalytic material of the titania-coated cement has been submitted for a series of the photocatalytic degradation tests of the tartrazine molecule and remained still active and comparable to those observed during the first reaction tests.