Dairy waste scum obtained from downstream process of milk production is a potential source for production of biodiesel. It is a less dense floating solid mass that majorly consists of triglycerides of fatty acids which are important constituents for a fuel. This book aims to produce biodiesel using dairy waste scum via transesterification process using sodium/potassium hydroxide (NaOH/KOH) catalyst. The experimental results lead to an yield of 89.02% of biodiesel using NaOH catalyst with optimized process parameters of temperature of 55oC, reaction time of 120 min and catalyst loading of...