The conversion of algae biomass into biofuels involves several principles and methods that aim to extract and convert the valuable components of algae into usable and energy-dense fuels. Here, we will describe the key principles and methods of algae biomass conversion into biofuels:
1. Extraction of Lipids:
Lipids are the primary target for biofuel production from algae biomass. The extraction of lipids involves separating the lipid-rich fraction from the rest of the biomass. Various methods are employed for lipid extraction, including:
* Solvent Extraction: Solvents such as hexane, chloroform, or ethanol are commonly used to dissolve lipids, followed by separation through techniques like centrifugation or filtration.
* Supercritical Fluid Extraction: Carbon dioxide (CO2) at supercritical conditions is used as a solvent to extract lipids. The high solubility of CO2 for lipids allows for efficient extraction, and CO2 can be easily recovered and reused.
* Mechanical Methods: Techniques such as mechanical pressing or ultrasonication can be employed to rupture algal cells and release lipids.
2. Transesterifi....
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