Harvesting Chlorella vulgaris by natural increase in pH: effect of medium composition.

@article{Nguyen2014HarvestingCV,
  title={Harvesting Chlorella vulgaris by natural increase in pH: effect of medium composition.},
  author={Thi Phuong Dong Nguyen and Matthieu Frappart and Pascal Jaouen and J. Pruvost and Patrick Bourseau},
  journal={Environmental technology},
  year={2014},
  volume={35 9-12},
  pages={1378-88}
}
The freshwater microalga Chlorella vulgaris was harvested by autoflocculation resulting from the precipitation of magnesium or calcium compounds induced by a slow increase in pH in the absence of CO2 input. Autoflocculation was tested in two culture media with, respectively, ammonium (NH4+) and nitrate (NO3-) ions as nitrogen source. The culture pH increased because of photosynthesis and CO2 stripping. pH rose to 11 after 8 h in the NO3- medium, but did not exceed 9 in the NH4+ medium. No… CONTINUE READING

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