Journal of the American Ceramic Society, Vol.91, No.4, 1300-1305, 2008
Incorporation of galvanic waste (Cr, Ni, Cu, Zn, Pb) in a soda-lime-borosilicate glass
In the present investigation, a glassing process for galvanic waste (GW) incorporation with a high chemical stability is presented. Glasses with up to 50 wt% of galvanic solid waste by modifications in the basic composition of soda-lime-borosilicate glasses were prepared. After fusing at temperatures up to 1300 degrees C, the glasses were characterized by inductively coupled plasma, scanning electron microscopy/energy-dispersive X-ray spectroscopy, high-temperature microscopy, transmission and reflected light microscopy, nuclear magnetic resonance, X-ray photoelectron spectroscopy, and X-ray diffraction methods. The chemical stability was evaluated by hydrolytic attack assays. Glasses containing up to 40 wt% of GW with a very high chemical stability, similar to bottle glasses, were obtained.