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Fig. 9 | Biotechnology for Biofuels

Fig. 9

From: Pre-concentration of microalga Euglena gracilis by alkalescent pH treatment and flocculation mechanism of Ca3(PO4)2, Mg3(PO4)2, and derivatives

Fig. 9

The concentrations of dissolved Ca2+ and Mg2+ in the PEM medium adjusted to pH 8.5 after adding multiple fold concentrations of Ca2+ and Mg2+. Dissolved a Mg2+ and b Ca2+ concentrations were quantified, respectively. Control was without pH adjustment. ** represent p < 0.01. The values represent mean ± S.D. n = 3

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