Skip to main content
Bioresources and Bioprocessing

Table 2 Sedimentation kinetics determined for each of the studied suspensions

From: Surface physicochemical properties of selected single and mixed cultures of microalgae and cyanobacteria and their relationship with sedimentation kinetics

Microalgal suspensions

%  R a

Gompertz model parameters

a (%)

b (h)

c (h −1 )

R 2

Single cultures

     

  C. vulgaris

73.6 ± 5.2 a

100.0

2.0

0.35

0.990

  M. aeruginosa

66.1 ± 4.8 a

100.0

2.8

0.33

0.965

  P. subcapitata

86.6 ± 6.0 b

89.7

1.0

0.63

0.999

  S. salina

85.0 ± 7.5 b

100.0

3.0

0.56

0.997

Mixed cultures

     

  C. vulgaris + M. aeruginosa

58.6 ± 0.8 c

100.0

1.7

0.24

0.993

  C. vulgaris + S. salina

69.6 ± 13.7 a

95.3

2.7

0.41

0.999

  P. subcapitata + M. aeruginosa

85.2 ± 2.2 b

100.0

2.1

0.45

0.999

  C. vulgaris + P. subcapitata

89.6 ± 2.2 b

91.8

2.2

0.94

1.000

  P. subcapitata + S. salina

72.4 ± 8.7 a

82.1

1.7

0.38

0.998

  S. salina + M. aeruginosa

86.1 ± 2.7 b

100.0

4.0

0.66

0.994

  1. Microalgal removal percentage was determined after 8 h of settling, and recovery kinetic parameters were determined through the Gompertz model. aValues are presented as the mean ± standard deviation of two independent experiments. Different letters within the same column represent statistically different values (p < 0.05). % R, microalgal removal percentage determined after 8 h of settling; a, upper asymptote; b, displacement along the x-axis or lag time (b > 0); c, tangent at the inflection point or sedimentation rate (c > 0); R 2, coefficient of determination obtained through the model fit of Gompertz model to the experimental data.
Back to article page