TECHNOLOGY FOCUS - BIOLOGY - Preferred Process: The weight percentage of the microalgae in the aqueous solution prior to mixing with the hydrophobic liquid is less than or equal to 4 wt.%. The aqueous suspension is mixed with the hydrophobic liquid and the flocculent. The process further involves (c) skimming the top phase from the bottom phase; (d) centrifuging the top phase to separate the hydrophobic liquid from the algae; (e) reusing the hydrophobic liquid to separate algae suspended in a second aqueous solution; and (f) reusing the bottom phase for growing additional algae. Preferred Components: The algae are capable of growing in the aqueous solution. The weight ratio of the hydrophobic liquid to the microalgae in step (a) is 1:1-100:1. The hydrophobic liquid has a specific gravity of less than 1. The flocculent is 1:1-100:1 weight ratio of the flocculent to the microalgae in step (a). The portion of the microalgae in the top phase is at least 50 wt.% of the microalgae suspended in the aqueous solution in step (a). The aqueous solution of step (a) contains from 0-4 wt.% dissolved salts.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The flocculent comprises a multivalent cation. The flocculent comprises aluminum ions, iron ions, calcium ions, magnesium ions, alum, aluminum chlorohydrate, aluminum sulfate, calcium oxide, iron(II) chloride, iron(II) sulfate, polyacryl amide, latex, sodium aluminate and/or sodium silicate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The hydrophobic liquid is a fatty acid alkyl ester, a free fatty acid, a mixture of free fatty acids, a monoglyceride, a diglyceride, a triglyceride and/or an alkane (preferably fatly acid methyl ester (FAME)). EXAMPLE - Dry Cyanobacteria Spirulina (15 g) and distilled water (400 g) were mixed such that a colloid of algae in water was formed. Prior to the experiment, the algae were sieved and particles 53-125 ~ mu m in diameter were used. The colloids were allowed to settle for 12 hours. A thin layer of fatty acid methyl ester (FAME) (60 g) was then added to the algae in water solution such that the solution contained water (84 wt.%), algae (3 wt.%) and FAME (13 wt.%). The solution was then mixed at 9500 revolutions per minute with a high-sheer mixer to form an emulsion. The solution was then allowed to separate for 12 hours. The FAME layer was skimmed and the FAME was separated from the algae. The algae were then weighed to determine the amount of algae in the FAME and aqueous layers. 100% of the Cyanobacteria Spirulina was collected in the FAME layer.