Egg shells were collected from a nearby bakery Tiruchirapalli,
Tamil Nadu, India. Waste frying oil was procured from the
canteen, National Institute of Technology, Tiruchirappalli,
Tamilnadu, India and its physiochemical properties were measured
and presented in Table 1. Anhydrous methanol of analytical
grade and commercial CaO purchased from Merck
Limited, Mumbai, India were used in the transesterification reaction. Commercial CaO was treated in the muffle furnaceat 600 C for 3 h before use.