Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
SEM images of bottom ash. (a,b) shows the irregularly-shaped bottom ash particles, which are porous in nature; (c) shows crystallized anhydrite or gypsum on the surface of bottom ash particles; (d) shows rhombohedrally-shaped calcite crystals and other calcium-based minerals [35].
