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| Enhancement of lipid productivity and flocculation by co-cultivation of Chlorella sp. U4341 and Monoraphidium sp. FXY-10 |
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| KeyWord:Chlorella Monoraphidium co-cultivation lipid productivity harvesting cost biodiesel |
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| Abstract: |
| The co-cultivation of Chlorella sp. U4341 and Monoraphidium sp. FXY-10 under heterotrophic condition to improve the lipid productivity was studied. The flocculation and sedimentation of microalgae cells were promoted and accelerated by co-cultivation so as to reduce the harvesting cost of microalgae biomass. The results showed that the co-cultivation of Chlorella sp. U4341 and Monoraphidium sp. FXY-10 significantly increased the lipid productivity (315.60 mg/(L.d)) compared with mono-cultivations (272.07 mg/(L.d)and 268.54 mg/(L.d)). After sedimentation for 5 h, the flocculation efficiency of microalgae cells in co-cultivation reached above 90%, far higher than that in mono-cultivation. Therefore, co-cultivation of microalgae might be the solution for the low lipid productivity and high harvesting cost of microalgae. |
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