Eggshell Ceramic - Bio material

The first step in the procedure was to collect used eggshells and wash them thoroughly. Boil them for about 15 mins to kill all bacteria. The eggshells need to be dried out next; brittle but not burnt. Grind the eggshells down to the tiniest particles possible in a blender and pass the powder through a sieve. Now take the alginate in a mixing bowl, add some water and mix thoroughly so that no lumps remain. Gradually add the egg shells into the water-alginate mixture until a thick slurry is formed and all the ingredients are mixed well. Pour the mixture into a mold. Let the composite dry and there’s your eggshell ceramic ready!