PRODUCTION OF GLASS-CERAMIC FROM SLS GLASSES AND WASTEWATER SLUDGE

Abstract

This project presents an alternative method for disposal sludge from industrial waste water treatment plants and SLS glass via converting them to glass-ceramic materials. The sludge was initially characterized for its chemical composition using EDXRF and XRD. The glass-ceramics were prepared from a mixture of waste water sludge and SLS glasses and melted at 1375 °C for 3 hours and quenched by pouring into water to obtain a coarse frit. The frit glass was then crushed and sieved to 106µm and press to a pellet. The sintering process was performed at from 700-1000 °C for 2 hours and were morphologically characterized with XRD, SEM and EDX. Overall results showed the crystalline phase of diopside sodian-critobalite glass-ceramic is depending on thermal treatment process and make them attractive to industrial use such as in construction, tiling and glass-ceramic applications.