Extractive-transesterification of algal lipids under microwave irradiation with hexane as solvent

- Two microwave-enhanced extractive-ethyl-transesterification reactions were studied.
- Hexane as co-reactant may enhance the lipid extraction from algae biomass.
- MW extractive-transesterification performs superior to Bligh and Dyer Method.
- Combined extraction and transesterification methods may save chemicals and energy.
- Process optimization and comparison of biodiesel conversion analysis were presented.