Hydroxyapatite is one of the most versatile material
used for implantation purpose due to its
similarity to natural bone material1. Even though
polymer materials play vital role in synthesizing
artificial organs, they are neither biocompatible
nor bioactive. Hydroxyapatite proves to be highly
biocompatible and bioactive but its usage is limited
to non-load bearing applications because
of its inferior mechanical properties due to poor
sinterability. It is possible to rectify this drawback
by means of controlling the parameters such as
particle size, distribution and morphology2,3.
The eggshell contributes 11% of the total weight
of egg. The major constituent present in the shell
is CaCO3, which accounts around 91% of the
total weight. India, currently ranks fourth in world
in egg production with an annual production of
17,32,500 tons of egg. By taking 11% of the
weight, nearly it comes around 1,90,000 tons of
eggshell waste is created. This material goes
as a waste and leads to pollution since it favours
microbial action.