The process of turning microalgae into biodiesel involves four stages. They are growing algae, harvesting biomass, oil extraction, and conversion of the oil and residue. Each of the first four steps is further broken down into fundamental, individual, or numerous processes. The four stages of producing biodiesel from algae are mentioned here. Let's see them in brief: Algae Cultivation: Algae produce hundreds of times more oil per unit area than traditional crops and develop more quickly than food crops. Algae cultivation facilities require land to occupy water, carbon dioxide, and nutrients together, known as the culture media, in order to develop. Light is also needed for photosynthesis. Algae culture systems can be divided into two categories: open culture systems and closed culture systems. Biomass Harvesting: Algae in ponds, bioreactors, and offshore systems must be processed through stages such as harvesting microalgae, dewatering, and extracting fuel precursors bef...