Biodiesel and Algae

LeMar offer complete bio diesel plants to make in shorter processing time with addition of ultrasound processing technology.

Vegetable oils, animal fats, algae oil, and waste oils can be used to make clean-burning, renewable bio-diesel. Bio-diesel can be used in place of or mixed with petroleum-derived diesel.

LeMar Industries offers complete plants for biodiesel production using ultrasound cavitation technologies. Using ultrasound, the process of making biodiesel can be made into a continuous as opposed to a batch process; this will significantly increase the production scale and the biodiesel yield can be expected to increase by 8 – 14%.

Conversion process of bio-oil to fatty acid methyl esters (FAME) - biodiesel is known as esterification. Esterification is done by mixing vegetable oils (from algae, corn, soybeans, etc) with alcohol (methanol) and using diluted caustic soda (NaOH) as a catalyst. The resulting reaction produces fatty acid methyl esters (FAME), glycerol by-product, and soap by-product.


Batch Reactor Processing

Ultrasound Assisted Processing

Low reaction rate as it is limited by limited contact area between fluids; the reaction itself can take 1 – 4 hours

High reaction rate as oil and alcohol are thoroughly mixed into a nanoemulsion; the reaction takes place in 10 – 40 minutes

Long separation time (5-10 hours) as excess methanol and glycerol mix and this makes it harder to separate excess methanol from the biodiesel (FAME molecules)

Shorter separation time (30 minutes) of methanol  and glycerol as less methanol is used

Complicated post-processing: Biodiesel must be washed of excess catalyst and by-product soap

Lower excess methanol reduces the amount of energy/capital for its washing; the amount of caustic catalyst can be reduced by 50 – 60%


Algae is fastest growing base for bio diesel production.

Algae is one of nature′s most efficient and versatile photosynthetic factories. Algae absorbs CO2 in the growing process, as much as two tons of CO2 for every ton of algae produced oil. It has a short growing cycle and does not require arable land or fresh water, which makes it very attractive as a feedstock to make things, or as a healthy and natural feed or fertilizer.