A Review of the Harvesting Techniques of Microalgae

Algae are an important group of photosynthetic autotrophs and commonly found in different types water bodies, including paddy fields. The algal possesses distinctive characteristics ranges from prokaryotic cyanobacteria to eukaryotic algae. Within these, microalgae unicellular microorganisms widely distributed saltwater as well freshwater environments. Microalgae species have been utilized fields, especially animal human nutrition, medicine, bioremediation, bio-fertilizers. Recently, numerous studies reported the importance production biofuel. Further, great carbon dioxide fixation efficiency during growth, so farmable land is not required for cultivating microalgae. biomass a three-step process: cultivation, harvesting, processing. Of harvesting process considered challenging due its high cost, it directly affects processing step. In addition, several factors influence process, size cells (<30 µm), cultural conditions microalgae, electronegative property cell membrane, growth rate, etc. elaborate that involves chemical or mechanical approaches. A number techniques recover biomass, such membrane filtration, bio-flocculation, flotation centrifugation, sedimentation, coagulation. this context, review aims discuss various used This could be useful selecting appropriate technology enhancing yield biomass.