Department of Chemistry, Uttaranchal University, Dehradun-248001, India

Bioenergy generation needsanew approach in which a third generation biofuel derived from microalgae. Resources depleting frequently the renewable source must be adapted to get rid of such major issue. Fuel scarcity the population explosion is tie back to back. Anthropogenic activities the main cause of pollution.  Awareness towards environment cleaning is our priority. Resources from fossil fuel depleted researchers better switch over to renewable supply. Energy demands for new technology increased by approximately 50% till 2030. A carbon-neutral and a renewable energy supply liquid fuels are needed to reduce the petroleum-derived fuels that contribute to global warming. Microalgae, an aquatic family member, eukaryotic, photosynthetic and microscopic, freely suspended in water. An integrated approach, to bioremediate and also the fast energy generation which is attracting interest for researchers in this era of high fuel demands. Biofuels are produced by different sources but certain limitations as economic or low yield. The microalgae areunique third generation fuel and the byproducts Biodiesel as a transport fuel. Certain natural products, antibiotics, manure, fertilizers, and food feed for animals. Review article draw discusses mainly a- algae culture, b- wastewater treatment processes, c- greenhouse gases or flue gas sequestration, d- nutrients required in growth, e-biomass production of biodiesel, fBeneficial byproducts.