Artigo de peri??dico
Inertization of samall-scale chemical wastes using iron phosphate glass
Registro en:
0100-4042
6
37
10.5935/0100-4042.20140175
Autor
GOBBO, JOAO P.
FARIA, DALVA L.A. de
MARTINELLI, JOSE R.
Resumen
The viability of small-scale heavy-metal waste immobilization into iron phosphate glasses was investigated. Several waste forms
containing different amounts of heavy-ion wastes were evaluated (5%, 10%, 15%, 20%, 26%, 33%, 40% and 50% by mass) and their
X-ray diffraction patterns revealed that no crystallization occurred in glasses with waste concentrations up to 26%. The dissolution
rates for all of the reported glass compositions (ca. 10???8 g cm???2 min???1) are similar to those reported for the materials most commonly
used for waste vitrification. Iron phosphate glasses thus proved to be very useful for the immobilization of heavy-metal wastes,
exhibiting good contention and chemical durability comparable to that of borosilicate glasses.