Vitrified galvanic waste chemical stability

Chemical stability evaluation is the main parameter to harmful industrial waste treatment process for legal ratification process. The inertization by glassing is an interesting technological option for the treatment of galvanic solid environment harmful wastes mainly due to the possibility to avoid its heavy metals content toxic action. In this study a vitrification process for galvanic waste incorporation with good chemical stability was presented. Glasses with up to 40 wt.% of galvanic solid waste by modifications in the basic composition of soda-lime glasses were prepared. After fusing at temperatures up to 1300 °C the glasses were characterized by FT-IR, XRF and XRD methods. The chemical stability was evaluated by hydrolytic, alkaline and acid attacks assays. Glasses with homogeneous and high chemical stability were obtained.