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Microalgae do not settle by gravity, therefore expensive harvesting techniques must be applied. This is a major bottleneck of microalgal technology. Bioflocculation of microalgae and bacteria addresses this. MaB-flocs or Microalgal Bacterial flocs settle by gravity, up to density of 20 g per liter.
Two strains of Zoogloea resiniphila.The tube on the left shows typical floc formations in an otherwise clear culture of a bacterium, Zoogloea resiniphila, isolated from an activated sludge wastewater treatment reactor.
This approach allows for the concurrent exploitation of the microalgae's capabilities in both carbon dioxide fixation and wastewater treatment. [3] Algae, macroalgae, and microalgae hold promise in addressing critical global challenges. Sustainable development goals can be advanced through algae-based solutions, to promote a healthy global ...
Microalgae proteins are also investigated as thickening agents [15] or emulsion and foam stabilizers [16] in the food industry to replace animal based proteins. Some microalgae accumulate chromophores like chlorophyll , carotenoids , phycobiliproteins or polyphenols that may be extracted and used as coloring agents.
In colloidal chemistry, flocculation is a process by which colloidal particles come out of suspension to sediment in the form of floc or flake, either spontaneously or due to the addition of a clarifying agent.
A range of microalgae species are produced in hatcheries and are used in a variety of ways for commercial purposes. Studies have estimated main factors in the success of a microalgae hatchery system as the dimensions of the container/bioreactor where microalgae is cultured, exposure to light/irradiation and concentration of cells within the reactor.
When polymers chains adsorb to particles loosely, a polymer chain may bridge two particles, and induce bridging forces. This situation is referred to as bridging flocculation. When particle aggregation is solely driven by diffusion, one refers to perikinetic aggregation. Aggregation can be enhanced through shear stress (e.g., stirring).
Chlorococcum is a genus of green algae, in the family Chlorococcaceae. [1] The alga may be useful in the flocculation of lipids from wastewater. [2] It can be found in fresh water, but is more commonly found in soil or subaerial habitats (such as growing on tree bark, wood, stones, or plaster).