Table 5 Metals removal from CLWW using EPS and chemical coagulants
From: Treatment of laundry wastewater using extracellular polymeric substances (EPS)
Treatment | EPS concentration (g/L) | Removal (%) using S-EPS | Removal (%) using B-EPS | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Al | Na | Mg | K | Ca | Al | Na | Mg | K | Ca | ||
CLWW | 0.1 | 5.20 | 6.30 | 5.70 | 2.10 | 10.80 | 3.12 | 4.41 | 3.76 | 1.85 | 8.32 |
0.2 | 15.40 | 20.30 | 18.70 | 12.50 | 27.90 | 9.24 | 12.21 | 11.34 | 14.20 | 20.48 | |
0.3 | 32.60 | 38.10 | 36.90 | 27.40 | 46.70 | 18.56 | 25.67 | 20.35 | 27.11 | 37.96 | |
0.4 | 55.70 | 66.40 | 65.40 | 44.20 | 69.10 | 31.42 | 47.48 | 45.16 | 45.90 | 51.21 | |
0.5 | 67.80 | 84.20 | 79.70 | 78.60 | 85.70 | 41.68 | 55.94 | 56.60 | 62.17 | 64.99 | |
0.6 | 72.20 | 94.30 | 92.60 | 85.30 | 98.40 | 45.32 | 68.01 | 63.12 | 77.06 | 78.77 | |
CLWW + Alum | 0.1 | 6.34 | 5.80 | 6.38 | 2.33 | 13.23 | 3.49 | 4.94 | 4.10 | 1.76 | 9.40 |
0.2 | 15.79 | 17.68 | 20.94 | 14.88 | 29.02 | 11.35 | 16.92 | 14.45 | 11.45 | 23.28 | |
0.3 | 37.77 | 39.05 | 41.33 | 31.41 | 48.57 | 22.91 | 27.87 | 28.55 | 23.91 | 45.63 | |
0.4 | 69.95 | 65.09 | 73.25 | 47.06 | 75.86 | 39.43 | 53.06 | 43.05 | 32.95 | 61.12 | |
0.5 | 84.72 | 79.46 | 89.26 | 84.25 | 89.13 | 46.56 | 68.01 | 56.34 | 61.71 | 72.57 | |
0.6 | 87.08 | 84.76 | 97.30 | 92.68 | 96.20 | 52.52 | 75.93 | 69.62 | 73.31 | 81.62 | |