TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred System: The system further comprises a cell lysing unit to disrupt the cell wall of the microorganisms after dissolved air flotation system and substantial proportion of the aqueous medium are separated. Preferred Components: The dissolved air system separates the biomass from 90 wt.% of the aqueous medium. The electroflocculation system comprises a vessel having at least one anode and at least one cathode for receiving and contacting the biomass in the aqueous medium, and an electrical current generator to pass an electrical current between the anode and cathode to ionize and coagulate the biomass. The dissolved flotation system comprises a flotation vessel and a microbubble generator to provide microbubbles to flotation vessel. The microbubbles have diameter of 1-10 mu m. The biomass comprises several microbial cells. The cell lysing unit comprises a pulse generator to subject the biomass to a pulsed electrical current to disrupt the cell wall of the microorganisms and produce a mixture of higher density and lower density intracellular and extracellular material, and a separation unit to separate the lower density intracellular and extracellular material from the higher density cellular material. The cell lysing unit further comprises a centrifugation system. The centrifugation system further comprises one or more three phase centrifuges to separate lower density intracellular material, water and extracellular material. The lower density intracellular material comprises lipids. Preferred Method: The method further involves disrupting the cell wall of the microorganisms of the biomass in the biomass stream to produce cell lysing products. The disruption involves subjecting the cells to the pulse electrical current to produce cell lysing products. The method further involves centrifuging the cell lysing products to recover the lower density and higher density products. Preferred Composition: The cell lysing product comprises mixture of higher density and lower density intracellular and extracellular material. EXAMPLE - No suitable example given.