Table 3.
The polysaccharide purity and recovery from A. platensis under different flocculant treatments
| Method | Dosage (mg L−1) | Polysaccharide purity (%) | Polysaccharide retention rate (%) | Total polysaccharide recovery rate (%)a |
|---|---|---|---|---|
| Crude extract | 52.31 ± 1.35 | 100 | 86.76 ± 5.57a | |
| Polyferric sulfate | 250 | 62.40 ± 2.56 | 58.49 ± 1.95 | 50.75 ± 1.78 |
| 500 | 69.76 ± 2.67 | 63.01 ± 1.15 | 54.67 ± 1.94 | |
| 750 | 76.80 ± 3.35 | 68.42 ± 0.97 | 59.36 ± 1.69 | |
| Polyacrylamide 150 | 200 | 53.97 ± 1.27 | 78.07 ± 2.01 | 67.73 ± 1.98 |
| Polyacrylamide 170 | 200 | 56.31 ± 1.31 | 79.78 ± 1.57 | 69.22 ± 1.79 |
| Chitosan | 600 | 60.73 ± 1.36 | 57.83 ± 1.09 | 50.17 ± 0.99 |
| 900 | 59.25 ± 1.29 | 56.81 ± 1.21 | 49.29 ± 0.86 | |
| 1200 | 56.67 ± 1.29 | 55.01 ± 0.52 | 47.73 ± 0.59 | |
| ZTC1 + 1 | 350B + 175A | 80.90 ± 1.01 | 86.73 ± 1.98 | 75.25 ± 1.31 |
| 700B + 350A | 82.05 ± 0.21 | 81.14 ± 2.03 | 70.40 ± 0.66 | |
| 1400B + 700A | 83.37 ± 0.14 | 81.15 ± 2.24 | 70.70 ± 0.54 | |
| ZTC1 + 1 + Sevage (two times) | 350B + 175A | 98.90 ± 1.01 | 78.67 ± 2.11 | 68.25 ± 1.13 |
aThe total polysaccharide recovery was assessed based on the high-pressure homogenization + HWE process