المجلة الدولية للعلوم والتقنية

Renewable fuels for alternative energy sources have been paid a great attention, biodiesel has been gaining worldwide popularity as an alternative energy source. The production of biofuels from microalgae, especially biodiesel, has gained huge popularity in the recent years, and it is assumed that, due to its eco-friendly and renewable nature, it can replace the need of fossil fuels. Algae are discussed by phycologists as promising for biofuel production based on its biomass and fatty acid productivity in present study we focuses on comparative between the deferent species of algae in production of oil and biomass, it good potential for biodiesel production, the utilization of algae as the resilient source for biofuel specially micro algae Senedesmus quadricaud, Cladophora sauteri and recorded as mean 48%, 18% respectfully as oil of dry weight. The algae Cystoseira barbata was 22% while red algae Carollina granifera reached to 16% of oil content in the end of the experiment at pH 10. The algal biomass of S. quadricaud and C. sauteri was 1.2 g /L , 7.7 g/L respectively whereas seaweeds distinguished by high algal biomass 230g/m2 for C. granifera and 244g/m2 for C. barbata. Keywords: Biofuel Production, Biodiesel, Micro & Macro Algae, Alternative Energy.