Effective harvesting of the marine microalga Thalassiosira pseudonana by Marinobacter sp. FL06

Identification, characterization, and lipid profiling of microalgae Scenedesmus sp. NC1, isolated from coal mine effluent with potential for biofuel production

“…After that, with a little variation, at the end of microalgal cultivation maximum pH of the microalgal culture was (8.78 ± 0.04). This increase in the pH of the microalgal culture during cultivation could be attributed to decrease in the CO 2 of the culture owing to increased photosynthetic activity of microalgae due to growth of biomass [ 28 ]

Fig. 1 Cell growth and pH profile of microalgae Scenedesmus sp.

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“…The microalgae Chlorella sorokiniana 211−8 k, showed lowest removal effiency of 8.6 % at pH 9, whereas the highest flocculation efficiency of 97 % was noted at pH 13 [ 45 ]. The observed variation in the flocculation efficiency could have occurred due to change in the surface charge (Zeta potential) of the microalgal cell at changed pH conditions, which would have affected the flocculation capabilities of microalgal cells [ 44 , 28 ].Moreover, it has been reported that change in pH affects the dissolution of metal ions and the surface composition of microalgal cells are also affected [ 46 ].

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A Review of Energy Consumption in the Acquisition of Bio-Feedstock for Microalgae Biofuel Production

“…Compared with chemical flocculation, physical flocculation avoids the problems of culture pollution and harmful byproducts caused by chemical additives. Biological flocculation primarily uses the viscous substances and biosurfactants produced by the organism itself or during its metabolism to make the microalgae cells aggregate with each other through netting or bond bridging to be finally collected as bio-feedstock [71]. Certain fungi, bacteria, and microorganisms and their active substances are conducive to the flocculation of biomass as well.…”