How is biodiesel produced from algae?

Algal oil is converted into biodiesel through a transesterification process. Oil extracted from the algae is mixed with alcohol and an acid or a base to produce the fatty acid methylesters that makes up the biodiesel. An excess of methanol is used to force the reaction to favor the right side of the equation.

Can you make biodiesel from algae?

Microorganisms, such as algae, can be turned into biofuel through the extraction of fatty acid contained in biomolecules known as lipids. Extracting this fatty acid traditionally required removing all the water from the microorganism, resulting in a dry powder or biomass slurry.

What catalyst is used for biodiesel production?

Strong alkali catalysts such as NaOH, KOH, CH3ONa and CH3OK (potassium methoxide) are used for biodiesel production. However, alkali metal alkoxides are found to be more active than hydroxides [26].

How do you make biodiesel from microalgae?

There are several pathways for processing microalgae into biofuel: biodiesel production through transesterification of lipids [3], bioethanol production through fermentation of the algal biomass, biogas production through anaerobic digestion, and bio-crude production through thermochemical conversion are among the …

Which algae used in the production of biofuel?

oleoabundans (fresh water microalga) and Nannochloropsis sp. (marine microalga) proved to be suitable as raw materials for biofuel production because of their high oil content (29.0% and 28.7%, respectively). Both microalgae, when grown under nitrogen shortage, showed a great increase (»50%) in oil quantity.

Which is the main reaction involved in biodiesel production?

Biodiesel is produced from vegetable oils or animal fats and an alcohol, through a transesterification reaction [1, 2, 4, 5]. This chemical reaction converts an ester (vegetable oil or animal fat) into a mixture of esters of the fatty acids that makes up the oil (or fat).

How do algae grow biofuels?

Algae for biofuels is typically farmed in ponds, using the sun. Hann’s method will be to “potentially grow the algae in a confined space, just using electricity from the solar panels,” the university says. A bioreactor, which is a way to grow algae, typically using light.

Where is algae biofuel used?

Potential Pathways to Biofuels Algae are already important in numerous commercial uses: to produce nutritional supplements, to treat sewage, and as coloring agents. One of the most promising uses of algae is as renewable raw material for biofuels.

When sulfuric acid is used as a catalyst in biodiesel production?

For those processes sulfuric acid (98%) was employed as a catalyst because of its advantages to the higher FFA contained raw oil. It was found that methanol and sulfuric acid were suitable to perform the esterification reaction to increase biodiesel production of the process.

Why is a catalyst needed in transesterification?

Transesterification is one of the reversible reactions and proceeds essentially by mixing the reactants. However, the presence of a catalyst (a strong acid or base) accelerates the conversion and a little excess of alcohol is used to shift the equilibrium toward the formation of fatty acid alkyl esters and glycerol.

What is microalgae biofuel production?

Microalgae have emerged as a potential feedstock for biofuel production as many strains accumulate higher amounts of lipid, with faster biomass growth and higher photosynthetic yield than their land plant counterparts.

Why is algae good for biofuel?

Advantages for Biofuels A significant advantage of using algae for biofuels is that it need not displace farmland used for growing food sources. The Department of Energy reports that algae have the potential to yield at least 30 times more energy than land-based crops currently used to produce biofuels.