Abstract
It is known that fly ashes from municipal waste incineration are particularly problematic because of significant concentration of heavy metal and chloride. One of possible methods to treat chloride is to entrap chloride into glasses, which are produced by melting bottom ashes with fly ashes. The electrical conductivity of various CaO-Al2O3-SiO2 glass systems containing chloride was measured at high temperature under reduced atmosphere. It was found that the electrical conductivity increases and activation energy for conduction decreases as increasing chloride content. It was considered that the number of non-bridging oxygen decreases as chlorines increase and the chlorines are combined with adjacent Ca2+ ions in the glass network.
