Produção de membrana filtrante de vidro reciclado pelo processo de sinterização com posterior caracterização

Abstract

This study aims, the production of recycled glass membranes by sintering process and subsequently characterize them. The sintering process occurs at temperatures the glass melting temperature, joining glass particles on a surface phenomenon. The production of the membrane has been performed by addition of sodium chloride (NaCl) to the glass powder processed in a ball mill, which in the sintering process remains inert, since it is a non-sinterable phase. The solid mixture of sodium chloride and glass powder was compressed at three different compression pressures, generating samples which were taken to an oven to be sintered. Then the membranes have been boiled in water to remove the non-sinterable phase, leaving voids in their places, the pores. This removing process by boiling have had a 93,56 % efficiency. After production of membranes has been done the characterization of them by microscopy and porosimetry, obs erving the potential for use in separation processes, which proved to be suitable for conventional filtration due to more frequent size of formed pores are in a range between 10 and 20µm.