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Table 3 Relationship between cell concentration (1.2, 0.8 and 0.5 g/L) and chitosan dosage during microalgal biomass harvesting (mean ± SD)

From: Microalgae Chlorella vulgaris biomass harvesting by natural flocculant: effects on biomass sedimentation, spent medium recycling and lipid extraction

Biomass concentration in dried weight, g/L

Dose, g/L

Harvest efficiency,  %

1.2

1.000

98.3 ± 1.3

0.500

94.7 ± 1.0

0.250

91.9 ± 2.6

0.125

86.8 ± 2.4

0.050

71.3 ± 5.4

0.010

58.8 ± 4.6

0.8

1.000

98.0 ± 0.9

0.500

97.5 ± 2.3

0.250

98.7 ± 1.2

0.125

91.2 ± 0.9

0.050

80.8 ± 2.6

0.010

65.4 ± 5.0

0.5

1.000

98.9 ± 0.4

0.500

97.5 ± 1.9

0.250

96.3 ± 0.5

0.125

94.6 ± 1.6

0.050

92.3 ± 2.5

0.010

78.9 ± 4.3