Table 5 Concentrations of water-soluble elements in the samples of the digestates from the primary digester
Time (days) | Calcium (mg/L) | Magnesium (mg/L) | Phosphorus (mg/L) | Sulfur (mg/L) | Potassium (mg/L) | Sodium (mg/L) |
|---|---|---|---|---|---|---|
81 | 218 | 210 | 20.5 | 33.6 | 3270 | 258 |
88 | 243 | 269 | 12.2 | 34.0 | 3230 | 273 |
95 | 212 | 217 | 37.9 | 47.0 | 2980 | 252 |
102 | 425 | 343 | 41.7 | 39.1 | 3110 | 270 |
109 | 149 | 157 | 40.4 | 42.6 | 3170 | 231 |
116 | 92.0 | 89.5 | 27.9 | 41.1 | 2510 | 199 |
123 | 91.7 | 134 | 44.6 | 42.9 | 2870 | 215 |
130 | 167 | 281 | 53.4 | 62.5 | 4630 | 357 |
137 | 161 | 173 | 54.8 | 47.2 | 2860 | 250 |
144 | 83.5 | 112 | 42.8 | 44.0 | 3470 | 238 |
151 | 123 | 169 | 37.9 | 40.4 | 3630 | 252 |
158 | 127 | 145 | 52.9 | 40.0 | 3220 | 228 |