4. Conclusion
In this investigation the ECH process showed encouraging results with microalgal strains C. sorokiniana and S. obliquus which proved that ECH process can be advantageous process for harvesting of different species of microalgae. By using non scarifying carbon electrode metallic contamination in the harvested microalgae and electrode depletion is completely avoided. The ECH process exhibited higher microalgal recovery efficiency by adding the electrolyte. ECH process has nodeteriorating effect on the lipid extraction process as well as composition of lipids from microalgae. These results denote that ECH process could be used as promising harvesting step in commercial scale microalgal biodiesel production.