Obtenção de TiO2 pelo método Pechini visando o desenvolvimento de membranas cerâmicas para tratamento de água.

Abstract

The aim of this work is to study the synthesis and characterization of TiCb powder by the Pechini method, to be used to ceramic membranes for application in the water treatment. For one better understanding of the boarded subject, the work was divided in three stages. The first stage consisted of the synthesis and characterization of powder of TiC^. In this stage it was verified that the Pechini method was efficient in the obtaining of nanosized powder (15,4 nm), pure and crystalline. The second stage was referring at the development of the ceramic membranes of TiC«2. It was verified in this stage that change in the type of tubular support (dry or humidified in water) and the variation of the time of slip (30 and 60 seconds) for the deposition of the layer of Ti02, did not present variation in the size of grain and neither of the pores of the layer of deposited TiC>2. It was because the deposited layer didn't be homogeneity distributed on the supports. In the last stage were made tests in laboratory scale, aiming at to the application of the titanium ceramic membranes in the water treatment. In this stage it was concluded that the tested membranes had presented good selectivity, with turbidez values less than the CONAMA'S legislation, however, with relatively low flow.